Just came across your channel, and now it would appear I have around 10 videos to watch. Love your style, no mucking around, no life story, and that whiteboard is a work of art.
I watched this.. watched a couple other videos. Went to bed slightly still confused. Slept on it, had a epiphany while sleeping. SO I thought i understood it, went to confirm by Watched this again and it makes total sense. Thank you. This was a good video.
Brilliant teaching. Not everyone is gifted to teach in a way that people can understand. You are the best with it. I'm a mechanical engineer. Right now, I'm trying to learn GD&T concepts in order to understand CMM reports on the inspected parts.
I've been a mechanical engineer for over 25 years and your explanations of these concepts are the best I've ever seen. The bad news is that you don't produce enough videos and the sound quality is not the best. I watch many videos across many subjects like sailing, dirt bikes, cars, drones, welding, law and machining. A common thing I have seen on all of the channels is that the production quality improves over time likely due to added resources based on increased ad revenue. It's like a circle of improvement....improve quality, more viewers, more money, better equipment, etc. Many content producers underestimate how important good sound is on a video. The thing that most do that you aren't is that most produce videos on a regular basis. Regularly releasing new content motivates people to subscribe which drives increased revenue......blah blah blah. Your niche and teaching style makes your YT channel primed to take off if you just keep at it.
Hello kslats916! First, thank you for watching! Second, thank you for taking the time and interest to write such a helpful comment! You took time out of your day to write a longer comment that was full of very useful and motivating critiques! I am also a mechanical engineer as well as a maker, a welder/fabricator, machinist, and all-around curious person. I dive into numerous topics and sometimes it is difficult to find enough time in the day to follow all of my passions including creating videos on GD&T. I am, however, hearing from numerous people that they think this channel could expand and be something great if I invest more time in it and so I am planning on devoting more time to it here going into the future. Thank you again for watching and for providing the motivational critique and uplifting words of encouragement! If you have any personal thoughts, advice, questions, or want to share info about projects you may have going on, I'd love to talk more with you. My email is calebsokoll@gmail.com Have a wonderful day kslats916!
I have been always struggling understanding MMC and LLC in drawings. Now you decoded that for me for ever. just don't know how to say Thanks you. very appreciated man. God bless. keep it up
I like your explanation sir.... But same I like...first time.I am seeing printed white board...... You work is awesome in board..you worked more in board to write... Super Go-ahead sir..
this is one of the best explanation I have seen for the topic. Thank you @Straight To The Point! 'The given value of the position tolerance is to be considered as the INITIAL value, when the feature is at its MMC condition' and then we have to 'ADD the diameter deviation value to the given position tolerance and use it as a BONUS tolerance' were the key points of my understanding from your explanation.
that second advantage of using the MMC condition is also well understood. My understanding is as follows. Since we can't change the hole positioning after it has been drilled, before throwing the part, at least we can do is to see the ALLOWED hole diameter for the current (deviated (already drilled)) position of the hole from the chart, and then enlarge it to that particular (allowed) hole diameter.
Hi skankhunt42! First, I see you man! I appreciate your various quality comments on several of the videos so thank you! Second, your takeaway from the video is perfect! How much the hole diameter size deviates away from its MMC size is considered "bonus" tolerance and so that means you get to add that amount of deviation to the position tolerance. Obviously this does not go on forever as you are not allowed to machine the hole any bigger than what the size tolerance states. So once you reach the maximum hole size allowed you have to stop there. Otherwise the part will fail due to the hole size being too large. Thanks again for watching and for the awesome comments! Stay safe and healthy!
I am QA and Project Management... I work with tool room and inspection a lot.... I have learned so much from u... thank you for your time and detail into these bonus tolerances
Bless your soul! I can't tell you how many ambiguous videos I watched about this topic that only left me with more questions. This all made perfect sense the first time I watched it, was very organized, and as your channel name puts it, straight to the point! Thank you so much for your efforts.
Thank you for the explanation of relationships between hole size and hole position. This is the first video of many on MMC/LMC in which I could visualize what's going on and make sense of it.
Hi there Helen!!! I definitely understand your struggle! I am a fellow engineer and so I definitely understand that it's not an easy degree to earn! I actually enjoyed my Machine Design course quite a bit. Understanding and learning how to compile materials, geometry, mechanisms, geartrains, and power sources all to achieve an end mechanical goal was quite fun and it felt like a much more applied coarse where I could actually see practical use for the concepts and theory being taught. Keep up the struggle and good luck! If you have any GD&T questions let me know in the comments section and I will do my best to respond!
Excellent work on the graphic video showing the MMC-size with a BONUS tolerance. Keep up the good work! Technology-teaching is a valuable profession. Thank You! Thomas (T J) Vanderloop, Author, Instructor & AWS/LSME Membership as a Team Leader
Hello Again Mr. Vanderloop! Thanks for the positive feedback! MMC and "Bonus Tolerance" are great tools for designers, engineers, and machinists to reduce cost so I hope everyone watching is able to understand how it applies to clearance hole features. Thanks again and stay safe and healthy!
Dude that was awesome! I have been banging my head against this concept for a month and a half and your explanation was a light bulb moment. Thank you for putting this out there.
Hi there Trayjan00! I'm glad you found this useful! I find that a lot of times GD&T is taught from a theoretical perspective and it can be hard to then apply it to practical scenarios. I hope the mini-assembly was useful in understanding how MMC can be applied to clearance holes from a practical perspective. Remember, MMC is a great tool to use any time you are dealing with any type of "Clearance" feature (where one features fits through or in-between another feature). MMC preserves functionality while giving the overall design and machinist additional tolerance to take advantage of just by modifying the size of the features. This is something that you simply can't do with traditional plus/minus tolerancing. Have a great weekend and stay safe and healthy!
Was struggling to understand mmc and almost gave up in youtube but your video cleared all my doubts and thanks man and try to make as many videos as possible . your title exactly fits your content .
This video was superb. GD&T is only painful to learn because people don't explain it well. It's actually quite logical and intuitive if you can get past a lot of the terrible prose and butchered jargon-heavy language most people write about it in. I have yet to find a textbook that is clear, concise, and relates principles to applications as this video does. Please make more of these videos! Liked, subscribed, and shared!
Good morning Ars Umbris! Thank you for the compliment and encouragement! I will definitely continue. My plan is actually to start organizing the channel a bit and start a series of videos starting with the basics and working my way logically through the topic in a way that builds upon itself. Right now I feel like my videos are a bit random and hard to see the sequencing. But again, thanks for the kind words, for doing the TH-cam thing by liking and subscribing, and for sharing. That's very thoughtful of you. Have a wonderful rest of your weekend!
Congratulations, the best video about MMC that I found, really concise and practical. Brought up the value of using MMC and applicability on inspection/manufacturing.
Hi there Caiã Roberto Tabalipa! I appreciate the positive feedback! I know MMC can be a tricky topic, especially when it comes to its practical application and how it is interpreted by the manufacturing and inspection stakeholders. I do have a small request if you end up with a few spare moments, I am going to try to start understanding a little better who is watching and what their technical needs are. With that in mind could you reply and let me know what job you do and how GD&T is part of your work/hobbies/passions? Thanks again Caiã for watching and for participating in the comments section. Please stay safe and healthy and have a wonderful evening!
I'm almost to my midterm for my class and I still have no idea what is going on. This video was extremely helpful, will be checking them all out. Thank you!
From India.i have seen so many videos on gd&t but no one has explained position tolerance like u did. Sir your video got me selected in an interview. Thanks to you. Sir just fix the audio level problem in the video
Great videos! I used them as a refresher on GD&T before a recent job interview having previously worked for a company not using the principles. Really clear and easy to understand they are a great resource. Thank you! Oh and I got the job!
After searching for so many videos in you tube, this one is very clear and cleared all my doubts. Volume is too low but thats okay. Please increase the volume next time.
Hi again Mr. E. RambleOn! I appreciate your participation across the comments sections! It's very affirming and motivational! Thanks for your viewership and feedback and see you around in the comments sections! Have a great day!
Excellent. I'm subscribed. Great videos on GD&T. I have taken both the Fundamentals and Advanced GD&T courses from AGI. Your videos are a great way to see the theory explained in practice. Thank you.
While I have been in the trade for a good number of years, and as I listen to all of what you explain, all I can think is. Just machine the part to the X/Y positional tolerance, and everything else is just bonus room for the machinist. Put the hole diameters in the middle of the spread, and you will have no problems in QC.
Hi there Andrei, I appreciate your kind words of encouragement! I was away for a bit, but due to the positive response from everyone viewing the videos I will be posting content on a much more regular basis. Again thank you for watching and participating in the comment section. It really helps to know my presentation and material is working well. Have a great rest of your Sunday!
you know what, if when i was learning GDT someone actually just made a table like you did to explain MMC with the tolerance values changing in the FCF box, this would have made instant sense. Instead all instruction seems to just break it out into a formula with a new tolerance value but it never really clicks for new students
Hi there Angel! Thanks for the positive feedback! I've got two more videos out that explain how to calculate the correct clearance hole diameter to ensure absolutely no interference during assembly so check them out and let me know what you think in the comments. I personally can appreciate it when someone provide real-world practical knowledge and so that is my goal with these videos. Thanks again for watching and I hope to see you in the comments section some more. Have a great day!
Hello there Lalitha! I've got two new videos out. They are two method on how to properly calculate the diameter of the clearance holes I described in this video. If you use one of either of those methods you can be 100% sure your parts will fit together and function properly interference-free! Check them out when you get a chance! Also, thank you for watching and for giving your feedback here in the comments section! It is much appreciated! Have a great day!
Great explanation! Question... Since the position tolerance is called out on a feature of size, isn't the tolerance zone a 0.014 wide cylindrical zone from a median derived center line? And thus it can only move a max of 0.007 in any direction from the derived center line? This is for the example you gave at MMC.
Hello Henry, you are correct. The tolerance zone is a cylinder with a diameter of .014 when the clearance hole feature is at its MMC. However, the orientation and location of the tolerance zone is not "derived" from any feature such as the median centerline of the clearance hole. Tolerance zones are first perfectly oriented and located from the specified datums which are simulated using your inspection setup (see datum feature simulators in ASME Y14.5). Then the part is placed in the inspection setup and the physical part geometry is inspected to determine if it properly falls inside the perfectly oriented and located tolerance zone. In this case, the tolerance zone is a cylinder of perfect shape which would be perfectly oriented to the primary datum using an implied perpendicular 90 degree basic angle and located from the secondary and tertiary datums using a combination of two specified basic location dimensions. To address the core concept I think you are driving towards though, yes, I was somewhat incorrect or slightly misleading without further explaining to say the hole is "shifted" to its allowed maximum of .014. The maximum allowed "radial" shift is .007 from the true position. The maximum allowed "diametrical" shift is .014 from the true position. If you will allow I will provide an explanation rather than an excuse. When I initially drafted my whiteboard I actually listed both the radial and diametrical shift values and in my initial practice runs I explained the difference between the two. However, I felt it was additional information that wasn't necessarily critical to explain the concept of MMC. It made the video longer than what I wanted and I felt it "muddied" the waters and pulled attention away from the goal of explaining MMC. My plan is to create a video that conceptually explains how position controls hole features. In this future video I will spend a few seconds explaining the differences between radial and diametrically shifting of a hole's axis away from true position within the tolerance zone. From the subtle details of your question I can tell you have a good grasp of the fundamentals of GD&T. I hope you do not feel that this video did the viewer a disservice in its goal of explaining how MMC works with respect to clearance holes for the GD&T beginner. Feel free to follow up with any comments or corrections. GD&T is something that is better learned from each other with an open mind due to its complexity. Ultimately, thank you for watching and participating in the conversation and overall learning experience by commenting. Have a great day!
@@StraightToThePointEngineering Hi, I have another question. I see that you haven't made next video about critical dimension of hole yet, so I want to ask you sth. Let's take your example with the same hole I mean 0.281 +0.07 -0.02 and 0.014MMC. In that case, the maximum let's say "position of screw" in assembly has to be 0.265? I took 0.281-0.02 which gave me 0.279 and 0.014MMC so "Virtual Dimension" of circle which cannot be crossed by the hole boundary is 0.265, am I right? So as I wrote, outer boundary of screw (max dimension) cannot be bigger in this example?
@@Piotr-vk9sw Hi there Piotr! Let me see if I understand your question properly. You are attempting to understand the fitment relationship between the clearance hole and the fastener in terms of Virtual Condition. By determining the fitment using Virtual Condition calculations, you will ensure the fastener and clearance hole will always assembly even if the features are manufactured at worst case. When designing using Virtual Condition, as long as the Virtual Condition of the external feature (the fastener) is less than or equal to the Virtual Condition of the internal feature (the clearance hole), then the features will fit together during assembly. If I understand your question and comment, then yes you are correct! Your calculation of the Virtual Condition of the clearance hole was correct per the following: Ø.281 - Ø.002 - Ø.014 = Ø.265. From a practical design perspective, you would then use this Virtual Condition value to determine the maximum allowable Position Tolerance that you could apply to the threaded hole that the fastener will get assembled into. You would start off with what you know. You know the maximum diameter of a 1/4-20 UNC 3A fastener is Ø.250. You now know the Virtual Condition of the clearance hole and so you can set that as the Virtual Condition of your fastener which equals Ø.265. Now simply calculate the maximum allowable Position Tolerance of the fastener's threaded hole per the following: Max Position Tolerance = Virtual Condition - Max Fastener Diameter. The numbers will look like this: Ø.265 - Ø.250 = Ø.015. This tells you that the maximum position tolerance you can apply to the threaded hole the fastener will be assembled into is Ø.015. The only caveat is that you MUST properly apply the correct Projected Tolerance Zone to the Position Tolerance that is controlling the threaded hole. I hope this helps reinforce that you are correct in how you calculated the Virtual Condition of the clearance hole. Additionally, you are correct by stating the Virtual Condition of the fastener can also be called its Outer Boundary. I would, however, stay away from using the term "Virtual Dimension" and stick to calling it the "Virtual Condition". Virtual Condition is defined as a numerical value that is calculated from MMC or LMC and the applied positional tolerance so there is no need to create your own term. If you have any questions, please feel free to respond. Thanks for watching and engaging all of us in the comments section! Have a great day!
Hi, your explanation very clear.thank you very much.
Thank you for watching and commenting Karthi! Enjoy the rest of your weekend!
Just came across your channel, and now it would appear I have around 10 videos to watch. Love your style, no mucking around, no life story, and that whiteboard is a work of art.
I watched this.. watched a couple other videos. Went to bed slightly still confused. Slept on it, had a epiphany while sleeping. SO I thought i understood it, went to confirm by Watched this again and it makes total sense. Thank you. This was a good video.
Brilliant teaching. Not everyone is gifted to teach in a way that people can understand. You are the best with it. I'm a mechanical engineer. Right now, I'm trying to learn GD&T concepts in order to understand CMM reports on the inspected parts.
I've been a mechanical engineer for over 25 years and your explanations of these concepts are the best I've ever seen. The bad news is that you don't produce enough videos and the sound quality is not the best.
I watch many videos across many subjects like sailing, dirt bikes, cars, drones, welding, law and machining. A common thing I have seen on all of the channels is that the production quality improves over time likely due to added resources based on increased ad revenue. It's like a circle of improvement....improve quality, more viewers, more money, better equipment, etc. Many content producers underestimate how important good sound is on a video.
The thing that most do that you aren't is that most produce videos on a regular basis. Regularly releasing new content motivates people to subscribe which drives increased revenue......blah blah blah.
Your niche and teaching style makes your YT channel primed to take off if you just keep at it.
Hello kslats916! First, thank you for watching! Second, thank you for taking the time and interest to write such a helpful comment! You took time out of your day to write a longer comment that was full of very useful and motivating critiques!
I am also a mechanical engineer as well as a maker, a welder/fabricator, machinist, and all-around curious person. I dive into numerous topics and sometimes it is difficult to find enough time in the day to follow all of my passions including creating videos on GD&T. I am, however, hearing from numerous people that they think this channel could expand and be something great if I invest more time in it and so I am planning on devoting more time to it here going into the future.
Thank you again for watching and for providing the motivational critique and uplifting words of encouragement! If you have any personal thoughts, advice, questions, or want to share info about projects you may have going on, I'd love to talk more with you. My email is calebsokoll@gmail.com Have a wonderful day kslats916!
This is hands down one of the most crystal clear explanation I have come across. Thanks, brother!
I have been always struggling understanding MMC and LLC in drawings. Now you decoded that for me for ever. just don't know how to say Thanks you. very appreciated man. God bless. keep it up
I like your explanation sir.... But same I like...first time.I am seeing printed white board...... You work is awesome in board..you worked more in board to write... Super Go-ahead sir..
this is one of the best explanation I have seen for the topic.
Thank you @Straight To The Point!
'The given value of the position tolerance is to be considered as the INITIAL value, when the feature is at its MMC condition' and then we have to 'ADD the diameter deviation value to the given position tolerance and use it as a BONUS tolerance' were the key points of my understanding from your explanation.
that second advantage of using the MMC condition is also well understood.
My understanding is as follows.
Since we can't change the hole positioning after it has been drilled, before throwing the part, at least we can do is to see the ALLOWED hole diameter for the current (deviated (already drilled)) position of the hole from the chart, and then enlarge it to that particular (allowed) hole diameter.
Hi skankhunt42! First, I see you man! I appreciate your various quality comments on several of the videos so thank you! Second, your takeaway from the video is perfect! How much the hole diameter size deviates away from its MMC size is considered "bonus" tolerance and so that means you get to add that amount of deviation to the position tolerance. Obviously this does not go on forever as you are not allowed to machine the hole any bigger than what the size tolerance states. So once you reach the maximum hole size allowed you have to stop there. Otherwise the part will fail due to the hole size being too large. Thanks again for watching and for the awesome comments! Stay safe and healthy!
You are the only person explain MMC completely in YT
Thank you
I am QA and Project Management... I work with tool room and inspection a lot.... I have learned so much from u... thank you for your time and detail into these bonus tolerances
Bless your soul! I can't tell you how many ambiguous videos I watched about this topic that only left me with more questions. This all made perfect sense the first time I watched it, was very organized, and as your channel name puts it, straight to the point! Thank you so much for your efforts.
I think this is the best explanation of this I've seen.
Thank you for the explanation of relationships between hole size and hole position. This is the first video of many on MMC/LMC in which I could visualize what's going on and make sense of it.
Your explanation is world class. I have never seen anyone explained this like you do. Great job
I am an engineering student studying for a Machine Design Exam and your videos as saving me! Thank you!
Hi there Helen!!! I definitely understand your struggle! I am a fellow engineer and so I definitely understand that it's not an easy degree to earn! I actually enjoyed my Machine Design course quite a bit. Understanding and learning how to compile materials, geometry, mechanisms, geartrains, and power sources all to achieve an end mechanical goal was quite fun and it felt like a much more applied coarse where I could actually see practical use for the concepts and theory being taught. Keep up the struggle and good luck! If you have any GD&T questions let me know in the comments section and I will do my best to respond!
Excellent work on the graphic video showing the MMC-size with a BONUS tolerance. Keep up the good work! Technology-teaching is a valuable profession. Thank You!
Thomas (T J) Vanderloop, Author, Instructor & AWS/LSME Membership as a Team Leader
Hello Again Mr. Vanderloop! Thanks for the positive feedback! MMC and "Bonus Tolerance" are great tools for designers, engineers, and machinists to reduce cost so I hope everyone watching is able to understand how it applies to clearance hole features. Thanks again and stay safe and healthy!
An absolutely first-class explanation. Well done.
Finally, I understand it now. Good instruction not full of extra confusing stuff.
Taking a peek at this right before walking into a job interview, lol. Refreshing my memory after a year off of work.
Hope you got that job ☺️
Dude that was awesome! I have been banging my head against this concept for a month and a half and your explanation was a light bulb moment. Thank you for putting this out there.
Hi there Trayjan00! I'm glad you found this useful! I find that a lot of times GD&T is taught from a theoretical perspective and it can be hard to then apply it to practical scenarios. I hope the mini-assembly was useful in understanding how MMC can be applied to clearance holes from a practical perspective. Remember, MMC is a great tool to use any time you are dealing with any type of "Clearance" feature (where one features fits through or in-between another feature). MMC preserves functionality while giving the overall design and machinist additional tolerance to take advantage of just by modifying the size of the features. This is something that you simply can't do with traditional plus/minus tolerancing. Have a great weekend and stay safe and healthy!
TYSM , I was wandering all over the internet and yours is the best way to invoke about MMC to beginners.
Was struggling to understand mmc and almost gave up in youtube but your video cleared all my doubts and thanks man and try to make as many videos as possible . your title exactly fits your content .
How you draw all this up on that whiteboard is alone a reason that this could be a viral video on MMC. Well done.
Brilliant Explanation from the functional point of view....thumbs up
This video was superb. GD&T is only painful to learn because people don't explain it well. It's actually quite logical and intuitive if you can get past a lot of the terrible prose and butchered jargon-heavy language most people write about it in. I have yet to find a textbook that is clear, concise, and relates principles to applications as this video does. Please make more of these videos! Liked, subscribed, and shared!
Good morning Ars Umbris! Thank you for the compliment and encouragement! I will definitely continue. My plan is actually to start organizing the channel a bit and start a series of videos starting with the basics and working my way logically through the topic in a way that builds upon itself. Right now I feel like my videos are a bit random and hard to see the sequencing. But again, thanks for the kind words, for doing the TH-cam thing by liking and subscribing, and for sharing. That's very thoughtful of you. Have a wonderful rest of your weekend!
He is excellent skilled person as practically, I got full clarity about MMC after seeing this tutorial. Keep rocking buddy... 👍
This guy has just opened my third eye!! What a detailed explanation.. straight as an arrow!
Dude this unlocked this concept for me. Your visuals definitely gelped more than others. Thank you sir!!
I've been struggling on this topic for two weeks in my course. Thanks for the extremely helpful video and explanations.
Best explanation of MMC on whole youtube, thank you so much
Congratulations, the best video about MMC that I found, really concise and practical. Brought up the value of using MMC and applicability on inspection/manufacturing.
Hi there Caiã Roberto Tabalipa! I appreciate the positive feedback! I know MMC can be a tricky topic, especially when it comes to its practical application and how it is interpreted by the manufacturing and inspection stakeholders. I do have a small request if you end up with a few spare moments, I am going to try to start understanding a little better who is watching and what their technical needs are. With that in mind could you reply and let me know what job you do and how GD&T is part of your work/hobbies/passions? Thanks again Caiã for watching and for participating in the comments section. Please stay safe and healthy and have a wonderful evening!
honestly one of the best explanations I have ever witnessed. Keep making videos like this.
I'm almost to my midterm for my class and I still have no idea what is going on. This video was extremely helpful, will be checking them all out.
Thank you!
This helped a ton. How lucky are the students who have you as their professor?? If only there was someone like you in every machine shop.
Thank you, this was a brilliant explanation, with the actual and resulting charts side by side, the way you explain it makes it so much easier to see.
Hello, Your Teaching and Expalation is Very clear and Better understand . Thanks!
From India.i have seen so many videos on gd&t but no one has explained position tolerance like u did. Sir your video got me selected in an interview.
Thanks to you. Sir just fix the audio level problem in the video
first video i have seen with very clear understanding and example...awesome
Nano precision drawings and text on the whiteboard and very clear explanations!
Great videos! I used them as a refresher on GD&T before a recent job interview having previously worked for a company not using the principles. Really clear and easy to understand they are a great resource. Thank you!
Oh and I got the job!
After searching for so many videos in you tube, this one is very clear and cleared all my doubts. Volume is too low but thats okay. Please increase the volume next time.
Best method of explaining the concept and reasoning. Very effective. Thank you very much
Hi again Mr. E. RambleOn! I appreciate your participation across the comments sections! It's very affirming and motivational! Thanks for your viewership and feedback and see you around in the comments sections! Have a great day!
You explained better than my teacher. thank you so much !!!
Really appreciate the time you spent explaining this clearly.
Absolutely perfect explanation and that is the best whiteboard I have ever seen!
Given that you're using dry-erase markers, your lettering is remarkably good.
That writing and drawing can satisfy my day.
Excellent. I'm subscribed. Great videos on GD&T.
I have taken both the Fundamentals and Advanced GD&T courses from AGI. Your videos are a great way to see the theory explained in practice. Thank you.
you are a great teacher !! keep posting videos on regular basis .
Fantastic explanation
Hey sir, great explanation with real consequences of not following MMC while drawing. I request you add microphone for other lectures.
While I have been in the trade for a good number of years, and as I listen to all of what you explain, all I can think is. Just machine the part to the X/Y positional tolerance, and everything else is just bonus room for the machinist. Put the hole diameters in the middle of the spread, and you will have no problems in QC.
This is really straight to the point. Very good video.
Thank you so much for making it easy for students and newbie engineer like me.
It would be great if you could post more often. You are a great teacher!
Hi there Andrei, I appreciate your kind words of encouragement! I was away for a bit, but due to the positive response from everyone viewing the videos I will be posting content on a much more regular basis. Again thank you for watching and participating in the comment section. It really helps to know my presentation and material is working well. Have a great rest of your Sunday!
Loved the explanation, keep making high quality education videos like this.
you're awesome, great video. it's helping me through my first internship! thank you
Hey bro. this is the best video on mmc modifier. I would really appreciate if you could make more videos on GD&T.
Hats off!
Could you do a video on tolerance stacks which include flatness, surface tolerance, positional tolerances. RSS v hard stack would be beneficial.
you know what, if when i was learning GDT someone actually just made a table like you did to explain MMC with the tolerance values changing in the FCF box, this would have made instant sense. Instead all instruction seems to just break it out into a formula with a new tolerance value but it never really clicks for new students
The explanation is clear and easy to understand.
It would be great if you illustrate the virtual boundary to prove why the assembly will actually fit together
Thank you for this video, it really helps to understand the bonus tolerance in a better way.
Are you Mechanical Engineer??
@@Latestinfohub20 yes
@@shiwangijaiswal1606 Well nice to hear that and I think you are more bold as compare to other women.
😊😊😊😊😊
Looking forward to watching your next video mate¡ it’s getting even more interesting when it comes to a real practical use. Thanks
Hi there Angel! Thanks for the positive feedback! I've got two more videos out that explain how to calculate the correct clearance hole diameter to ensure absolutely no interference during assembly so check them out and let me know what you think in the comments. I personally can appreciate it when someone provide real-world practical knowledge and so that is my goal with these videos. Thanks again for watching and I hope to see you in the comments section some more. Have a great day!
awesome. appreciate the conciseness. Thank you!
Excellent explanation!!!!!!!
Excellent video. Extremely helpful to me.
Amazing explanation. Very transparent.
One of the best explanation one youtube... Great job...
Thanks, I was getting tired of telling my inspector "they just put that M on there to make it look fancy"
Thank you, I had a hard time understanding this in my textbook.
your handwriting is so nice
8:38 is when the lights came on, thank you!
Very useful video to remain me MMC.
This is great. You are doing a great job and a wonderful service. I did go and get your whiteboard jpeg file. Most useful and Thank you!!
Love from India
Your explanation is awesome, very clear and concise! Thanks!!
Beautiful! Drove the point home 🔥
Hello sir
Your explanation is very clear
Sound is a little dodgy but spectacular content. Subscribed.
bruh you're a legend
Wonderful Lectures ! Thanks.
This is very useful and descriptive. waiting for more!
Hello there Lalitha! I've got two new videos out. They are two method on how to properly calculate the diameter of the clearance holes I described in this video. If you use one of either of those methods you can be 100% sure your parts will fit together and function properly interference-free! Check them out when you get a chance! Also, thank you for watching and for giving your feedback here in the comments section! It is much appreciated! Have a great day!
Great vid very clear and understandable
Gday mate, loke most of the comments say, well explained. Keep it up
Great Man. Very useful.
This video is my lightbulb moment. I grok it now
Great job!!! Very clear explanations!
i love you
Thank you so much for these videos!
Excellent explanation, Really helpful. Thank you!
Great video🔥. Can someone explain WHEN to and not to use modifiers?
Dude i appreciate this, is there any other videos explaining how to set up grinding certain grinding ops.
beautiful explanationion
Your explanation is bang on, Man!!... Straight to the point.....Awesome. Thanks. Can u pls do videos explaining Tolerance Stack Up. Pls
Great video, helped so much!
Perfect explanation. Thank you.
Great explanation! Question... Since the position tolerance is called out on a feature of size, isn't the tolerance zone a 0.014 wide cylindrical zone from a median derived center line? And thus it can only move a max of 0.007 in any direction from the derived center line? This is for the example you gave at MMC.
Hello Henry, you are correct. The tolerance zone is a cylinder with a diameter of .014 when the clearance hole feature is at its MMC. However, the orientation and location of the tolerance zone is not "derived" from any feature such as the median centerline of the clearance hole. Tolerance zones are first perfectly oriented and located from the specified datums which are simulated using your inspection setup (see datum feature simulators in ASME Y14.5). Then the part is placed in the inspection setup and the physical part geometry is inspected to determine if it properly falls inside the perfectly oriented and located tolerance zone. In this case, the tolerance zone is a cylinder of perfect shape which would be perfectly oriented to the primary datum using an implied perpendicular 90 degree basic angle and located from the secondary and tertiary datums using a combination of two specified basic location dimensions. To address the core concept I think you are driving towards though, yes, I was somewhat incorrect or slightly misleading without further explaining to say the hole is "shifted" to its allowed maximum of .014. The maximum allowed "radial" shift is .007 from the true position. The maximum allowed "diametrical" shift is .014 from the true position. If you will allow I will provide an explanation rather than an excuse. When I initially drafted my whiteboard I actually listed both the radial and diametrical shift values and in my initial practice runs I explained the difference between the two. However, I felt it was additional information that wasn't necessarily critical to explain the concept of MMC. It made the video longer than what I wanted and I felt it "muddied" the waters and pulled attention away from the goal of explaining MMC. My plan is to create a video that conceptually explains how position controls hole features. In this future video I will spend a few seconds explaining the differences between radial and diametrically shifting of a hole's axis away from true position within the tolerance zone. From the subtle details of your question I can tell you have a good grasp of the fundamentals of GD&T. I hope you do not feel that this video did the viewer a disservice in its goal of explaining how MMC works with respect to clearance holes for the GD&T beginner. Feel free to follow up with any comments or corrections. GD&T is something that is better learned from each other with an open mind due to its complexity. Ultimately, thank you for watching and participating in the conversation and overall learning experience by commenting. Have a great day!
@@StraightToThePointEngineering Hi, I have another question. I see that you haven't made next video about critical dimension of hole yet, so I want to ask you sth. Let's take your example with the same hole I mean 0.281 +0.07 -0.02 and 0.014MMC. In that case, the maximum let's say "position of screw" in assembly has to be 0.265? I took 0.281-0.02 which gave me 0.279 and 0.014MMC so "Virtual Dimension" of circle which cannot be crossed by the hole boundary is 0.265, am I right? So as I wrote, outer boundary of screw (max dimension) cannot be bigger in this example?
@@Piotr-vk9sw Hi there Piotr! Let me see if I understand your question properly. You are attempting to understand the fitment relationship between the clearance hole and the fastener in terms of Virtual Condition. By determining the fitment using Virtual Condition calculations, you will ensure the fastener and clearance hole will always assembly even if the features are manufactured at worst case. When designing using Virtual Condition, as long as the Virtual Condition of the external feature (the fastener) is less than or equal to the Virtual Condition of the internal feature (the clearance hole), then the features will fit together during assembly. If I understand your question and comment, then yes you are correct! Your calculation of the Virtual Condition of the clearance hole was correct per the following: Ø.281 - Ø.002 - Ø.014 = Ø.265. From a practical design perspective, you would then use this Virtual Condition value to determine the maximum allowable Position Tolerance that you could apply to the threaded hole that the fastener will get assembled into. You would start off with what you know. You know the maximum diameter of a 1/4-20 UNC 3A fastener is Ø.250. You now know the Virtual Condition of the clearance hole and so you can set that as the Virtual Condition of your fastener which equals Ø.265. Now simply calculate the maximum allowable Position Tolerance of the fastener's threaded hole per the following: Max Position Tolerance = Virtual Condition - Max Fastener Diameter. The numbers will look like this: Ø.265 - Ø.250 = Ø.015. This tells you that the maximum position tolerance you can apply to the threaded hole the fastener will be assembled into is Ø.015. The only caveat is that you MUST properly apply the correct Projected Tolerance Zone to the Position Tolerance that is controlling the threaded hole. I hope this helps reinforce that you are correct in how you calculated the Virtual Condition of the clearance hole. Additionally, you are correct by stating the Virtual Condition of the fastener can also be called its Outer Boundary. I would, however, stay away from using the term "Virtual Dimension" and stick to calling it the "Virtual Condition". Virtual Condition is defined as a numerical value that is calculated from MMC or LMC and the applied positional tolerance so there is no need to create your own term. If you have any questions, please feel free to respond. Thanks for watching and engaging all of us in the comments section! Have a great day!
Amazing video. Explained very well. Thank you!