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are the chanfers for stress relief? what happens if there is no chanfering or fillet?

just so you know, the model 2011 is a double barrel 1911. fires 2 45acp rounds at once. termed a volly gun. thought that was what you were making. still a great video.

Fillets make the part more refined and I CNC all my own parts so not worried about searching for pricing. However I don’t know how some parts will be able to be made if you need a square in a corner

Have you ever considered nebula? Your content is certainly good enough and it would avoid the random censoring.

Nah, .45 auto is cheap. Learn to reload. If you can machine and program, you can reload lol. You are plenty intelligent.

I've seen some crazy setups in my day but I've never seen anybody turn a surface grinder into a shaper. I'm never going to get to sleep now 😂

Beautiful

Why... Why cant anerica just go with metric.... It makes the whole world run smoother. And they insists on keeping it, for no apparent reason. Consistency is key for measurements, and if only we could discard the outliers like ww normally do....

Great video man, this taught me similarly to the whole summer I spent working in machine shop as your explanations were all complete.

Excellent content. I learned design from several crabby old machinists that dearly loved showing the “college boy” how things are really done. Figure out how you are going to build it as you are designing. If you have some “stupid” design element you need to be able to defend it to the machinist. If not they will make you cry.

Begs the question why stock vendors don't make the stock sizes mostly commonly feeding short, vise holding jobs +1/16 or +1/8" over nominal....

5:48 another thing about machining these internal radii with a direct match sized cutter is the tool path, its taking a very abrupt 90 degree corner as apposed to a smoother path (some controls don't handle the abrupt corners very well and can cause form issues ), the amount of tool pressure and aggressive tool path combined smells like broken endmills.

good pace, good storytelling... you're a natural :-)

Excellent video! As a design engineer, there are so many decisions left solely for you to decide. Having a deep understanding of how these decisions affect others down the line is crucial. Love the video series, please continue making these videos.

Great info!

Man this is so good. Thank you!!

I don't really know why i've watched this, because i'm a Machinist and already know all of this... But still i wounder, since we use Metric all the way here in Germany, how the imperial System isn't unnecessarily confusing for people with our Job. How do you think about this?

Thank you for putting together these tips and explaining the reasoning behind them - it’s been very helpful to get the extra perspective!

you are a very deep thinker and apply your mind to each aspect of the cut

Dang!! That surface finish is incredible. Are you grinding the parts? What wheel?

You did a good job explaining that I believe. I was an estimator at a fabrication shop and saw a lot of mistakes in design for fabrication. Often I would return quotes with two prices. One “as designed “ one as “improved for manufacturability”

very true

as a engineering student i love these videos i wish we had more contact hours with machinists or more time spent on designing for manufacturability

worked at a place where we got a new part that was 6inchs at its largest size...the lady that ordered materal ordered 6in plate...every one of those places where undersize and unusable but they tryed to machine it anyways and everyone was scrap talk about a waste of time and money because they didnt want to accept they fucked up.

I could watch this all day. Love to get a look at the full vid one day.

Thank you, Adam, superb explanation! The information about pre-milled stock was particularly useful. One technical point on the video production: watch your sound levels in the edit. You're working out at a (guesstimated) 8-12dB lower than normal for TH-cam, and there's one inserted comment that's quite a bit lower still. You need to keep speech like this peaking to around 4-8dB below 100% (it's what the TH-cam audio algorithm expects), and adjust any/every inserted speech clip so it matches everything else. As I said, you're probably 16-20dB below 100%, which is rather a lot. Otherwise people have to jump for the volume control to turn down the adverts! TH-cam has a lot of technical docs on what they expect, but that's the simple version! I both enjoyed your content and style and have subscribed, so please keep it up :-)

Great video , I would add that the dimensional tolerances of the bar stock we are seeing now is awful compared to 20 years ago. It's like the mills have forgotten how to make anything other than Banana or Potato chip shapes.

I think you explained it well.

ATF "We need a gun registry to keep track of every firearm in the country" Adam " Not mine!"

I worked as a product designer for a small company a long time ago. I spent a lot of time in the machine shop talking to the machinists about my parts. I didn't have the formal education of an engineer. I was basically just a CAD monkey that they let design things. The machinists used to tell me they liked when I came down because I was willing to learn from them how to draw parts to make them manufacturable, whereas the degreed engineers would just insist that whatever they designed was how it had to be done. These videos remind me of those times down in the machine shop. Good times.

I only run a CNC router, but this video is really helpful in my trade. It's kind of hard to estimate how long a one off job will take, especially since I usually need to draw it in a CAD program myself. It's always these kind of corners that cause a time suck. Thanks!

Great stuff. Thank you!

Communication with the customer makes a difference too ?? Knowing what is acceptable helps. Not every part needs to be made to Aerospace limits, while some pride themselves on this level of quality it's a little difficult to quote every job to this level and still assume to have jobs coming in ??? The 1 thing I dislike about the Machining trade is, we need to make parts to high levels of quality and in most cases be paid less than a Plumber who only needs to succeed in making water run down hill ???

holy crap, that slide!

This is worth solid gold in the knowledge it provides to engineers and designers like myself to be able to understand and design based off the manufacturing process. Keep up the great work.

Great content! If you could make a video on tool and die mold and press problems. From a machining perspective that would be great for young tool makers. 💪🏻

There's always a difference between what people need and what they want. If a customer gets too full of themselves to listen to feedback, that's too bad for them. I agree with you on your last point. If the problem is manageable, it's a good exercise to figure it out if only for your pride of profession, and sometime in the future, some customer will consciously require that feature, and require it to be made well.

I'm running our ME department meeting this week, and have been looking for a good, relevant video to share during the lunch portion. I think this is it! Several good points for those of us that don't always understand how our parts are actually made.

Some rock solid tips right there, and you explained really well! Milling thin material further down to finish size must be a real treat, I feel you. I worked with sheet metal and it could warp and form bistable areas just from grinding a weld down too aggressively.

Your videos are great. I use them in my classroom lectures.

First time watching as a controls guy who's trying to learn machining. I'm extremely impressed. Let's hope youtube doesn't murder your channel

As a 3D printer, that is the button that makes your parts not separate at the ends.

Absolutely loving these past videos

This really resonates with me, when reviewing my junior engineer's drawings and designs they forget to think about how it's made. And I can sympathize, when I was a young engineer I was too concerned and obsessed with the perfection of the design and didn't want to compromise my design for the sake of manufacture. After working many years and having to CNC my own parts, I now want to design things that are easy to manufacture and get the job done, could the part be more perfect? yes. Will anyone manufacture it for me at the cost I want? No.

What it just as bad is chamfers or fillets on holes in curved surfaces that follow the hole. How much of this is done for aesthetic purposes.

Good information. I am retired now, but in my many years of die casting tooling and product design I found that many of the younger generation of engineers paid little attention to or had no concept of designing for manufacturing. This was especially true in a casting environment where undercuts are the enemy and secondary machining operations are cost prohibitive.

I love the arrow-point texture cuts on those guns! haha they actually do give me a pretty useful reference/indexing point

This is probably the sickest handgun I've seen lately, and I spend a lotta time studying handguns for their engineering

I've been a machinist for 20 years now. I went to school for engineering and I used to be a TA for solidworks. Early on in school I designed a dobsonian telescope armature on solidworks. My teacher looked at the finished product and told me my model looked sweet, but then he handed me an old McMastercar catalog and told me to price out the cost of material on the telescope. Material costs came to $2,500. He told me to go back to the drawing board and consider purchased parts from McMastercar as well as minimizing the cost by designing with stock in mind. I redesigned that same telescope for under $250.

ADAM, can you please help us? There's a lot of people you could help right now, and they would reward you handsomely in return :3 The USP and USP Compact have a proprietary rail, as the standard 1913/weaver rails we see on handguns today were not standard at the time of the USP's design. As a result, USP & USP Compact owners have a really subpar situation with pistol light attachments. Most lights will not fit these rails, although some, like the Olight PL Mini 2 and a few other O-Lights, and the Streamlight TLR-3 (the really old one) and I think maybe there's another TLR that fits. There are many lights which you can modify to make them fit, but that requires using an angle grinder or a Dremel, and then permanently cutting away at the light mount to allow it to fit onto the USP & USP Compact's rails. Overall, it's just a huge pain, because now you can't just get a gun, get a light, and get a holster. Now you gotta decide which adapter you're gonna run. And then you gotta figure out how the light is gonna sit and actually feel when you're using it, instead of just trying to approximate it by using measurements and such and imagining what it will be like in that measured position. And then you gotta find a holster maker who can make you a holster that fits your light + your rail + gun. And if you can't find one that makes your specific light + mount + gun combo, then you have to either hope you can find someone who is willing to put in the extra effort to make a super custom holster, or you have to make the holster yourself. There would be less of an issue with holsters though if there was ONE perfect and obviously best rail adapter that everyone would buy. It would make using a light rail adapter a much more popular decision for USP users and would drive huge volume, both from people who want a better adapter, and especially people who haven't wanted to use an adapter because the current options are bad. Knowing that this would be a great money making opportunity, this would drive interest in holsters that fit this new adapter, and incentivize holster makers to buy an adaptor to use as a model for their USP holster options. But even if holster maker don't give a shit about it, and we still have to go buy custom holsters anyway, then it's not like we're gonna be paying more for light-accommodating holsters than we already do now. The cheapest GOOD holster I've been able to find that accommodates things like the GG&G rail adapter + a few very popular lights and nothing else, is around $95 Currently, in order to use the light you wish to use, the main solution people have moved towards is using either the HK Parts rail adapter or the GG&G rail adapter. Unfortunately, both of these are pretty terrible in a number of ways. Both are wayyyy too far away from the USP's frame. They both seat the light lower than it needs to be, leaving a large chunk of empty space between the frame and the mount. There's just a ton of wasted space in both of them, especially in the cheaper, HK Parts adapter. Some smarter engineering would allow them to take a significant amount of height off the mount. All they had to do was just be willing to drill the holes through the mounted rail differently and they could have cut significant height out of the mount while still being a really sturdy and rock steady design. And they are both unnecessarily complex for the role they are accomplishing, causing them to often have failures -- well, the HK parts one seems fairly sturdy and reliable, especially compared to the GG&G adapter, which seems to frequently cause major issues. Plus, they both look stupid So yeh, if you could help us out, that would be incredible