Dear Mr Pete, never apologize for beating a dead horse. There are many of us that ARE interested and want to learn. Those that don't can just move to another lesson. You are a great teacher. I've grown very fond of your lessons and have benefited greatly!
Thank you for doing these video's you do a great job and make things easy to understand. I just wanted to say I think your doing the community a great service and i enjoy all your stuff!
I waited a long time for this series and you have done a great job ! I found an acme thread gauge but the tool gauge is what I am missing. This clears up some of the mistery on Acme. Thank you
These videos are such a wonderful resource for people. People that take the time to teach the world such as you need to be highly commended for your efforts.
@@mrpete222 not a problem sir you have been such a help to me in the past 3-4 Years Learning my Logan inside and out upside down and backwards. Just as a side note the other day I started to use those double sided Trigon inserts I think they are WNMG inserts and I didn't really notice before then how much slop was in my cross-feed and compound rest screws. Not backlash really although I guess you could classify it as backlash but slop being caused by the ware in the screw and and nut. and I have all the spare parts to build a second Logan that I got very very cheaply very lucky find so I keep them all boxed up just in case I need something. So I tore into my boxes and I got the worm screws and nuts for both cross-feed and compound. Well it turned out it was only the nuts that were worn down as it should be is they are softer one being cast iron and one being brass. So I replace them and the rigidity on lathe went from poor to unbelievable perfect. And I thought to myself you know what I bet that would have been the first thing mr. Pete told me to check. But like I said I really didn't notice much of an issue prayer to trying these double sided inserts they have no side rake as a result it takes a lot of horsepower to push them through the metal. But I guess to make a long story short if that's possible at this point LOL if it wasn't for your videos that gave me confidence to tear into the machine and do what was needed to make it run correctly I would have never even considered that. I probably would have lost interest in the entire hobby because I would have had such poor results. The next thing I'm going to do is attempt making the two Drive screws or warm screws if you would rather is I have cut become quite proficient at threading not to blow my own horn but I'm kind of proud of the fact. You taught me how to thread you taught me how to Gage the threads with the wires and now I can make any thread I want to or need to. You taught me how to check what was going on if it wasn't working right and gave me the attitude to succeed in these efforts. I really appreciate it and it's hard to appreciate a lot of things in the world these days. I become disabled in this hobby is all I have I'm able to do a couple hours a day sometimes and good days and it keeps my mind going and my body gets a little bit of activity as well. So I don't mean to sound like a brown noser for lack of a less vulgar term but I really do have a great deal of appreciation for what I've learned through your videos I continue to learn everyday .
I'm glad I help you on the Logan Generally, the where is on the brass not more than on the steel screw, Again, I'm sorry about your disability, and I'm glad that this hobby gives you some happiness and satisfaction. Keep watching
@mrpete222, tubalcain, lyle you are one of the coolest guys I know. You were apologizing for giving us too much detail. Bring it on. Thank you for these wonderful verbose videos. I may never make an acme thread but now I know how to do it! I grind my own bits so this is masterful instruction on how to make one. I plan on watching all of your metal shop videos. I was one of the dumb kids that thought shop was for the dumb kids - I took the academic classes (Physics, Calculus, Chemistry) and didn't take any shop classes outside of a few mandatory classes in Jr. High school, which I really enjoyed. I have been doing metal work for about 15 years now (with a lathe, drill press, bandsaw, angle grinder-my favorite tool) and kick myself for not learning this earlier as I LOVE IT! Thank you so much for your skilled instruction.
Thank you very much for watching and leaving a great comment. I was also in college prep, they didn’t want me to take Shop’s glasses. But since my dad was the teacher I got in. I wasted a lot of time in advanced Latin
I was wondering if you could do a video on sharpening countersinks. I struggle with getting them sharp and cutting correctly once they are dull. I have watched most of your videos and have learned a ton. Thank you!
Perfect I have done this in the past and I have no tool gage.. Just making a cardboard temp. of the root works for me. Also any tips on making a radius ball cutter thats my next project. SP
Looks like there is zero rake on the grind. Normally on most lathe bits, I grind about a 5 degree positive rake. Why is there zero rake on the ACME cutting bit?
What Is the Make and Model of your NEW HD Camera. I have noticed in your videos the clarity and it has a very sharp focus on close ups. I am currently looking for a new hd camera myself.
I was worried things were a little quiet from you, it seems that the youtube RSS feed skipped over tips #20-23 (including my requested micrometer episode). TH-cam must be having growing pains, because I'm having to buffer the videos instead of stream them too. Anyway thanks again. I'm sure I'll enjoy the four I have queued up for the moment.
When taking into consideration the lead angle of the thread, would it be wise to have more side relief on the right face of the cutter when cutting a right hand internal thread? I'm asking because I have to cut an internal TR80 x 10mm pitch 30° thread. This thread has a lead angle of about 3.5° so instead of making the side relief 5°, I made it 8° on the right side to compensate.
hi guys. im a young machinist and when ever i try to machine the ACME THREAD i a problem. the pitch im using is 6mm the formula and the set up on the machine im fine with it. the problem is that, after every 3mil depth i cut the threading tool stars to grab on the job, and i end up breaking the tool and when i try to change the tool is so difficult to chase with another threading tool. what can i do to avoid this problem?
Vuwani Nepfumembe Take aseries of cuts with a regular v tool to remove much of the metal. Then finish with the acme.. Also, is your tool ground correctly, oil, correct speeds, on center??
hi i live in cicero il i have an old lathe the model its in my photo somebody know how i can find the gears to thread in this lathe please give me some information lathe is 15" von wyck x72"made in cinncnati
Hi Mr Pete, if you beat this threading subject to death then we will be reborn of knowledge, lol, at 50 years of age i finaly found an idle, its you. thank you
It's not only the old guys who enjoy your videos... I've been watching them for years! I'll be 19 this september, and I hope to one day pass on the knowledge you gave to me to my children and everyone who takes an interest in this awesome, nearly dead practice.
You're a wonderful teacher Mr. Pete! It's unfortunate the whole class wasn't interested... If you were teaching in China, the whole class would be listening to your every word. We need to spend more money on education in North America... if not our next generation will be that barefoot boy.
That gauge looks like a flat piece of precision-cut metal, so more likely than a Chinese person, the new version would be made by a robot with a laser. That is still inexplicably located in China for some reason.
I know i'm late on this, but it's new to me. I am a machinist working in an industrial valve repair shop. I cut acme threads every single day of my working life, externals on valve stems and internals on the stem nuts. And I still loved this video...I'm 46 years old and have been a machinist since I started my first machinist job in 1993...You can never stop learning. As soon as you think you know it all and can't learn any more...you'll fail.
another great video , i was waiting for a vid on acme threads from you, and again thanks for making , uploading them, i check every day for your updates and you are a wonderful teacher ,,thanks and keep them coming...
wish I would have been in the front row . now I know what that gauge is for that Ive had for years thanks as always keep them coming Have you ever thought of putting you videos together and sell them at a moderte price as a box set type of thing would be xlnt for teachers and guys at home easer to put in a player then turn on computer Thanks
Have cut so many 7/8 inch .250 pitch .500 lead dbl lead left hand acme threads in K-monel that this is like old times. Rather not have to do that again as the double lead is a bit of a pain in the neck. Good video. I never had to cut a triple lead and glad I did not have to.
@mrpete222 480 is plenty good enough. I think the only time HD is important is when image quality NEEDS to be in 1080 or 720 but for educational videos like you make 480 is perfect!
It was a pretty great experience. I have the opportunity to work there through my school this year, I might just do it. I know people who work there and actually get a good amount of tools for free or reduced cost, which is fantastic.
awesome job..... stumbled across this looking at wood lathe techniques but we have a metal south bend in the family and I may end up watching all of your videos.
So if I understand this correctly, you can buy a fine pitch ACME cutting tool, then widen the point until it fits the thread pitch you want. I guess you could narrow them as well. You might be able to find overstock cutter sizes for a bargain price that way. ACME taps and dies and nuts are way expensive. I'll have to see if you have a lesson on sharpening drill bits, the gages I saw on Amazon indicated I still have things to learn, plus about 50 mediocre- sharpened bits I need to improve or adapt to a different material.
mrpete, Learning a lot from your videos. Question about the tool for the acme thread. All the diagrams show that the tip of the tool is cut flat and perpendicular to the main axis of the tool. All the tread diagrams show the root is flat and parallel to axis of the thread. If the compound is set to 14.5 degrees (half the 29), won't the root be at that angle rather than parallel to the thread axis? Thanx
I wish my teachers at school were like you. Most of mine didn't care about what they taught some didn't even understand it them selves. Thanks for the video I have to make a 1/2" 10tpi to make a new cross slide leadscrew for my Colchester chipmaster. This will be really helpful.
Sure do wish that I had a shop class instructor like you when I was in high school I would of been one of the 3 in the front row paying close attention to every word. As always thank you for sharing. Guy
@@mrpete222 Thank you for your answer. In the superior part of the sheet, it can be read "Atlas". Do you recommend me a good old book on the subject? I am one of the boys who first listen and read, and then make chips.
@@herrero4270 Watch this vid for great books.---- SHOP TIPS #189 tubalcain's LIBRARY & MACHINE RESOURCES mrpete222 For acme threading read threading pages in ---south bend, how to run a lathe! and THE ATLAS LATHE BOOK.
@@mrpete222 Thank you!!! I just suscribed to your channel and I haven't yet enought time to search all your videos. But all what I already found is very good, I like your style of teaching. I was a teacher myself, but in other areas of knowledge. Now I am retired, and beginning to learn how to turn and mill, all by books and videos, with 70 years over my back. To begin with, I am restoringan old 10" Delta Rockwell lathe. I also have an old 4 jaws chuck, without jaws. They are not in the market anymore, and I don't know how to make them.
The comment on the gauge, about the chinese boy. Hilarious. I only trust starrett tools, expensive but worth that quality! I like like 20 minutes from their facility in Athol, and have had extensive tours!
Inches should really be history these days. When studying or learning about engineering the only reason for using the imperial system should be for historical reasons such as restoration of old locomotives etc. University engineering courses in this day and age should be *_all_* metric with optional classes in the imperial system. It really is beyond time to move on. USA is the only country left in the world where the old imperial system is still in widespread use. Especially in construction and engineering. Thankfully, all the major science disciplines in the US, are metric (or SI). At least that's a start I suppose.
Dear Mr Pete, never apologize for beating a dead horse. There are many of us that ARE interested and want to learn. Those that don't can just move to another lesson. You are a great teacher. I've grown very fond of your lessons and have benefited greatly!
You are one of the best teachers anywhere. Patience and perseverance.
Thank you for doing these video's you do a great job and make things easy to understand. I just wanted to say I think your doing the community a great service and i enjoy all your stuff!
I waited a long time for this series and you have done a great job ! I found an acme thread gauge but the tool gauge is what I am missing. This clears up some of the mistery on Acme. Thank you
Thanks for taking the time to make this one Tubal, I'm about to cut my first ACME thread and this is just what I needed to see. Thanks for all you do!
+MrJoeGarner Thanks for watching
These videos are such a wonderful resource for people. People that take the time to teach the world such as you need to be highly commended for your efforts.
Thank you very much
@@mrpete222 not a problem sir you have been such a help to me in the past 3-4 Years Learning my Logan inside and out upside down and backwards.
Just as a side note the other day I started to use those double sided Trigon inserts I think they are WNMG inserts and I didn't really notice before then how much slop was in my cross-feed and compound rest screws. Not backlash really although I guess you could classify it as backlash but slop being caused by the ware in the screw and and nut. and I have all the spare parts to build a second Logan that I got very very cheaply very lucky find so I keep them all boxed up just in case I need something. So I tore into my boxes and I got the worm screws and nuts for both cross-feed and compound. Well it turned out it was only the nuts that were worn down as it should be is they are softer one being cast iron and one being brass. So I replace them and the rigidity on lathe went from poor to unbelievable perfect.
And I thought to myself you know what I bet that would have been the first thing mr. Pete told me to check. But like I said I really didn't notice much of an issue prayer to trying these double sided inserts they have no side rake as a result it takes a lot of horsepower to push them through the metal.
But I guess to make a long story short if that's possible at this point LOL if it wasn't for your videos that gave me confidence to tear into the machine and do what was needed to make it run correctly I would have never even considered that. I probably would have lost interest in the entire hobby because I would have had such poor results. The next thing I'm going to do is attempt making the two Drive screws or warm screws if you would rather is I have cut become quite proficient at threading not to blow my own horn but I'm kind of proud of the fact. You taught me how to thread you taught me how to Gage the threads with the wires and now I can make any thread I want to or need to. You taught me how to check what was going on if it wasn't working right and gave me the attitude to succeed in these efforts. I really appreciate it and it's hard to appreciate a lot of things in the world these days. I become disabled in this hobby is all I have I'm able to do a couple hours a day sometimes and good days and it keeps my mind going and my body gets a little bit of activity as well.
So I don't mean to sound like a brown noser for lack of a less vulgar term but I really do have a great deal of appreciation for what I've learned through your videos I continue to learn everyday .
I'm glad I help you on the Logan Generally, the where is on the brass not more than on the steel screw, Again, I'm sorry about your disability, and I'm glad that this hobby gives you some happiness and satisfaction. Keep watching
@mrpete222, tubalcain, lyle you are one of the coolest guys I know. You were apologizing for giving us too much detail. Bring it on. Thank you for these wonderful verbose videos. I may never make an acme thread but now I know how to do it! I grind my own bits so this is masterful instruction on how to make one. I plan on watching all of your metal shop videos. I was one of the dumb kids that thought shop was for the dumb kids - I took the academic classes (Physics, Calculus, Chemistry) and didn't take any shop classes outside of a few mandatory classes in Jr. High school, which I really enjoyed. I have been doing metal work for about 15 years now (with a lathe, drill press, bandsaw, angle grinder-my favorite tool) and kick myself for not learning this earlier as I LOVE IT! Thank you so much for your skilled instruction.
Thank you very much for watching and leaving a great comment. I was also in college prep, they didn’t want me to take Shop’s glasses. But since my dad was the teacher I got in. I wasted a lot of time in advanced Latin
Your videos are great. I'm watching them while taking metal shop in high school. You have so much information its amazing.
This is great stuff Mr Pete, I'm glad your able to share a fraction of your knowledge.
Thank you very much-
You are a really great teacher. Have just bought some of your workshop practice series books. Thank you for these videos.
What are the book titles and where did you get them? I agree he is a great teacher.
You got me hanging on the edge of my seat for part 2. Thanks again for all of your great videos.
Thank you sir, like having my grandpa teach me machining.
I was wondering if you could do a video on sharpening countersinks. I struggle with getting them sharp and cutting correctly once they are dull. I have watched most of your videos and have learned a ton. Thank you!
You may have a video on it, but I would like to see you turning a tapered thread on the lathe.
@730M Thanks--yes--I may be offering just that soon.
You rock sir! Another fantastic explanation.
THANK YOU very much for watching & encouraging me.
WHY DIDN'T MY HIGH SCHOOL HAVE MACHINE SHOP!?! I FEEL CHEATED!!!!
Perfect I have done this in the past and I have no tool gage.. Just making a cardboard
temp. of the root works for me. Also any tips on making a radius ball cutter thats
my next project. SP
Looks like there is zero rake on the grind. Normally on most lathe bits, I grind about a 5 degree positive rake. Why is there zero rake on the ACME cutting bit?
Very good video I only have one question: how does it apply when it is a thread of 2 or more inputs ???
I learned the same way with similar wooden models in 1992 in machine shop at Oswego High School. Yep, Illinois, not far for you, sir! :-)
Brian Streufert Thanks for watching. I used to go to the oswego drag strip every sunday--when I was young.
teacher !!! You are a genius !! A question, what would happen if we did not give the 16º and a half ??? Thanks from argentina !! teacher.
Nice job teach, that was very helpful .
What Is the Make and Model of your NEW HD Camera. I have noticed in your videos the clarity and it has a very sharp focus on close ups. I am currently looking for a new hd camera myself.
Nice touch using the acme pencil ha
Wow, aaa rex tool bit. I've got a few of those...at least 30-40 years old.
possible to get ahold of a measured drawing of an acme thread gauge, for making one?
I was worried things were a little quiet from you, it seems that the youtube RSS feed skipped over tips #20-23 (including my requested micrometer episode).
TH-cam must be having growing pains, because I'm having to buffer the videos instead of stream them too.
Anyway thanks again. I'm sure I'll enjoy the four I have queued up for the moment.
When taking into consideration the lead angle of the thread, would it be wise to have more side relief on the right face of the cutter when cutting a right hand internal thread? I'm asking because I have to cut an internal TR80 x 10mm pitch 30° thread. This thread has a lead angle of about 3.5° so instead of making the side relief 5°, I made it 8° on the right side to compensate.
Good idea. Increase that angle
Just out of curiosity, what is the circle at the end of this gauge for? I assume it's for a reference guide.
+Gun Lover To hang it up
Could you show us how you make a buttress thread as well? ak.a cannon thread or plastic thread. Please? =)
Thanks sir
Please guys help me how to set up in the lathe machine for proper procedure of acme cutting techniques
Please guys tech me how to set up in the lathemachine for proper procedure acme cutting techniques
hi guys. im a young machinist and when ever i try to machine the ACME THREAD i a problem. the pitch im using is 6mm the formula and the set up on the machine im fine with it. the problem is that, after every 3mil depth i cut the threading tool stars to grab on the job, and i end up breaking the tool and when i try to change the tool is so difficult to chase with another threading tool. what can i do to avoid this problem?
Vuwani Nepfumembe Take aseries of cuts with a regular v tool to remove much of the metal. Then finish with the acme.. Also, is your tool ground correctly, oil, correct speeds, on center??
You said Roadrunner liked Acme. It was Wile E. Coyote!
You certainly know machining but I know my cartoons! ;)
hi i live in cicero il i have an old lathe the model its in my photo somebody know how i can find the gears to thread in this lathe
please give me some information lathe is 15" von wyck x72"made in cinncnati
Me to !!!
Hi Mr Pete, if you beat this threading subject to death then we will be reborn of knowledge, lol, at 50 years of age i finaly found an idle, its you. thank you
Gilles Bujold Thanks for watching
@BestCatEvaDontHateMe I believe he's commenting on the deplorable state of China's labor laws and how Chinese industry cuts corners.
nice tanx
Baltucain
It's not only the old guys who enjoy your videos... I've been watching them for years! I'll be 19 this september, and I hope to one day pass on the knowledge you gave to me to my children and everyone who takes an interest in this awesome, nearly dead practice.
Please guys tech me how to set up in the lathemachine for proper procedure acme cutting techniques
You're a wonderful teacher Mr. Pete!
It's unfortunate the whole class wasn't interested...
If you were teaching in China, the whole class would be listening to your every word.
We need to spend more money on education in North America... if not our next generation will be that barefoot boy.
Thank you very much-
I'm using a HD camera now. It takes over 10 hours to upload a video. I might have to go back to the old format.
I would love to tour Starrett.
I missed this one, great video Tubalcain, definitely interested in acme threads.
Respond to this video...
Use this method--never disengaging the half nut lever. Watch this video--search Thread Cutting Closeup
Why does it have to be older guys like you who are interested ?? I'm younger guy and i am interested
That gauge looks like a flat piece of precision-cut metal, so more likely than a Chinese person, the new version would be made by a robot with a laser. That is still inexplicably located in China for some reason.
THANKS--glad your in the front row because the kids behind you are throwing rivets.
You will have to make a cutting bit. I have never done this.
I know i'm late on this, but it's new to me. I am a machinist working in an industrial valve repair shop. I cut acme threads every single day of my working life, externals on valve stems and internals on the stem nuts. And I still loved this video...I'm 46 years old and have been a machinist since I started my first machinist job in 1993...You can never stop learning. As soon as you think you know it all and can't learn any more...you'll fail.
Thanks for watching
Lyle, did you intentionally use an ACME Roofing pencil as a pointer for your ACME thread Video....cheers, and best wishes, Paul
lol
SONY HANDYCAM HDR-CX110
another great video , i was waiting for a vid on acme threads from you, and again thanks for making , uploading them, i check every day for your updates and you are a wonderful teacher ,,thanks and keep them coming...
Better Acme gauges are lot deeper in the notches
congratulations on you explicacon is a teacher. My respects from Argentina.
Thank you very much for taking the time on this.
wish I would have been in the front row . now I know what that gauge is for that Ive had for years thanks as always keep them coming Have you ever thought of putting you videos together and sell them at a moderte price as a box set type of thing would be xlnt for teachers and guys at home easer to put in a player then turn on computer Thanks
Have cut so many 7/8 inch .250 pitch .500 lead dbl lead left hand acme threads in K-monel that this is like old times. Rather not have to do that again as the double lead is a bit of a pain in the neck. Good video. I never had to cut a triple lead and glad I did not have to.
I enjoyed alot and learned alot from this video. .thanks alot
@mrpete222 480 is plenty good enough. I think the only time HD is important is when image quality NEEDS to be in 1080 or 720 but for educational videos like you make 480 is perfect!
It was a pretty great experience. I have the opportunity to work there through my school this year, I might just do it. I know people who work there and actually get a good amount of tools for free or reduced cost, which is fantastic.
Thank you!
awesome job..... stumbled across this looking at wood lathe techniques but we have a metal south bend in the family and I may end up watching all of your videos.
So if I understand this correctly, you can buy a fine pitch ACME cutting tool, then widen the point until it fits the thread pitch you want. I guess you could narrow them as well. You might be able to find overstock cutter sizes for a bargain price that way. ACME taps and dies and nuts are way expensive.
I'll have to see if you have a lesson on sharpening drill bits, the gages I saw on Amazon indicated I still have things to learn, plus about 50 mediocre- sharpened bits I need to improve or adapt to a different material.
mrpete, Learning a lot from your videos. Question about the tool for the acme thread. All the diagrams show that the tip of the tool is cut flat and perpendicular to the main axis of the tool. All the tread diagrams show the root is flat and parallel to axis of the thread. If the compound is set to 14.5 degrees (half the 29), won't the root be at that angle rather than parallel to the thread axis? Thanx
I wish my teachers at school were like you. Most of mine didn't care about what they taught some didn't even understand it them selves. Thanks for the video I have to make a 1/2" 10tpi to make a new cross slide leadscrew for my Colchester chipmaster. This will be really helpful.
Excellent refresher on cutting external acme threads. Lacking a gage, the width of the cutting tool tip is: .3707 X pitch.
The comment about the barefoot boy and schlitz beer cap honestly made me laugh out loud! good work man!!!
Sure do wish that I had a shop class instructor like you when I was in high school I would of been one of the 3 in the front row paying close attention to every word. As always thank you for sharing. Guy
T=up
In shop class I was one of the three guys in the front row watching and listening to the shop teacher.
either you are darn near 90 years old or you are tubalcain mk3, ha ha
I am darn near 90
I love the comment about the Chinese made gauge @ 3:37
Thank you, Mr. Peterson for sharing your knowledge and time with us.
Awesome explanation sir. Thank you so much.
What do you mean by "a standard 16 1/2 degree tool holder?"
is it the same 29 degree thread for double lead acmes?
Great work Pete. Keep it up. Much appreciated.
Can you make a video on making an acme tap?
u r so nice sir
Great mr peter
Hindi me bat kare please
Awesome, my machining instructor has wooden example tool bits just like those
👍
You encourage me to do great things!
You teach and make me laugh my ass off!
Great job 👍🏻
Quacy Wilson Thanks--glad I made u laugh
Excellent video! wish teachers today were like you sir
Thanks
اعجبني
Excellent - made perfect sense.
Thank you
How would you cut an internal acme thread. To match your 6 TPI external thread???
Watch tips #23. Its the same except--- use a 29 deg acme tool, and set compound at 14 1/2 deg.
Thank you very much I will do that
Hi, Pete. Tank you for the video. Will you please tell me from which book did you take the image of the ACME thread? Thank you in advance.
I really do not remember that it was a long long time ago that I made that video
@@mrpete222 Thank you for your answer. In the superior part of the sheet, it can be read "Atlas". Do you recommend me a good old book on the subject? I am one of the boys who first listen and read, and then make chips.
@@herrero4270 Watch this vid for great books.----
SHOP TIPS #189 tubalcain's LIBRARY & MACHINE RESOURCES mrpete222
For acme threading read threading pages in ---south bend, how to run a lathe!
and THE ATLAS LATHE BOOK.
@@mrpete222 Thank you!!! I just suscribed to your channel and I haven't yet enought time to search all your videos. But all what I already found is very good, I like your style of teaching. I was a teacher myself, but in other areas of knowledge. Now I am retired, and beginning to learn how to turn and mill, all by books and videos, with 70 years over my back. To begin with, I am restoringan old 10" Delta Rockwell lathe. I also have an old 4 jaws chuck, without jaws. They are not in the market anymore, and I don't know how to make them.
The comment on the gauge, about the chinese boy. Hilarious. I only trust starrett tools, expensive but worth that quality! I like like 20 minutes from their facility in Athol, and have had extensive tours!
Inches should really be history these days. When studying or learning about engineering the only reason for using the imperial system should be for historical reasons such as restoration of old locomotives etc.
University engineering courses in this day and age should be *_all_* metric with optional classes in the imperial system.
It really is beyond time to move on. USA is the only country left in the world where the old imperial system is still in widespread use. Especially in construction and engineering. Thankfully, all the major science disciplines in the US, are metric (or SI). At least that's a start I suppose.