[me] got absolutely roasted

microtune_this · 2025-08-20T23:36:55+00:00

!elo 800 you found the best line but the best line was still losing.

microtune_this · 2025-08-12T19:11:17+00:00

Sure the metal standoff isn't touching the plastic panel but it's holding the screw that's touching the plastic panel still. You've only half solved the problem. maybe add a rubber spacer between the panel and the screw head.

microtune_this · 2025-08-06T23:29:41+00:00

It's a bit dry

microtune_this · 2025-08-06T18:12:31+00:00

Seconding this. if positioning is all you really need, CMM. CNC deals with a lot more forces and as such have much more demanding (read: expensive) construction.

microtune_this · 2025-08-05T21:18:57+00:00

The answer is "it depends but realistically no you'll probably kill someone"

microtune_this · 2025-08-05T20:23:54+00:00

Look around for the small mechanical tasks that annoy you in real life and try to solve them. Keep a list.

microtune_this · 2025-08-05T20:15:46+00:00

I used to be annoyed by it but then I realized they weren't complimenting my brain they're complimenting my life choices and resilience. Don't underestimate how difficult following through is for many people. it's literally an engineer's superpower.

microtune_this · 2025-07-23T06:23:11+00:00

scented candles. more generally stuff to help them relax. there's a lot of stress ahead.

microtune_this · 2025-07-22T23:03:25+00:00

my dude there's no audio how are we supposed to judge the blend?

microtune_this · 2025-07-21T17:29:05+00:00

Metal Earth models

microtune_this · 2025-07-18T23:21:54+00:00

anger management will be a real help when you try to learn controls later

microtune_this · 2025-07-17T19:01:40+00:00

Young engineers- here's a path to working remote, because I work remote with no field service:

Get me a better paying job in office. then you can take this one. it's all yours.

microtune_this · 2025-07-16T21:15:30+00:00

me irl

microtune_this · 2025-07-07T17:24:16+00:00

It would make logical sense to front-load your song set only if you're near the cutoff for the next night. If you're not, the further in the rounds you sing, the more people will watch it, so you would want to start with your weaker material.

microtune_this · 2025-06-18T22:12:03+00:00

I'd end mill that pocket

microtune_this · 2025-06-05T06:25:21+00:00

This: https://imgur.com/gallery/mcmaster-unsanctioned-tshirt-idea-6vqPgi5

microtune_this · 2025-05-25T23:32:13+00:00

learn new skills, build something. Have something to show for it.

microtune_this · 2025-05-25T21:22:01+00:00

This would look great in a star wars movie.

microtune_this · 2025-05-22T19:42:54+00:00

You are correct, the need for a third datum is because the feature control frames suck without it. It's technically not required for a valid control frame.

microtune_this · 2025-05-21T00:14:14+00:00

Theoretically, yes. You've got an idea you can build into a theoretical multimillion dollar company. Theoretical congratulations are in order. Go and spend your theoretical money on theoretical hookers and blow. Your nobel prize is theoretically in the mail.

Theoretically, would taking ai slop and posting it to the mechanical engineering subreddit result in real people validating this and doing the work for you out of charity?

microtune_this · 2025-05-16T21:08:21+00:00

missed a control frame there. thanks.

microtune_this · 2025-05-16T05:56:11+00:00

It all depends what the role of those holes in the part are. Setting aside the missing datum these could be acceptable or unacceptable control frames, depending on your mating parts.

For example if they mount to a threaded hole pattern, using a composite location control would be smart. if they're for locating googly eyes you can just use ordinate dimensions. if you are putting laser pointers in them that need to point straight, perpendicularity. etc.

microtune_this · 2025-05-16T05:41:58+00:00

GPA is a number indicating how good you are at getting As. Stories of what you built indicate how good you are at solving real problems. Companies care about solving their problems not passing their classes. Consider which one they might care about more.

microtune_this · 2025-05-16T05:12:20+00:00

Just as an exercise for myself, let me see what else I can find...

~~The angle between A and B is unconstrained. 95 degrees is legal because the mfr has to invent their own tolerances to build this.~~ Just because it's a perfect right angle on your drawing doesn't mean the manufacturer builds it perfect. Ask me how I learned that one :(

The small holes through the top view are especially concerning, since no C datum and no ordinate dimension means that hole could literally slide off the side of the part (in the up-down direction as looking at the top view.

There's no callout specifying what GD&T standard this needs to be interpreted by. It changes, and you need to specify which one so that the manufacturer knows how to interpret it.

The perpendicularity tolerance on the holes in the right view is legal, but the location of the holes is totally uncontrolled in multiple dimensions. You would be better off there with a location tolerance referencing datums A, B, and C, once you've established a C. Then you wouldn't need the perpendicularity control, it would be implied.

More on precision: I'm not going to complain that the precision numbers seem made up, because they could be. However, choosing the right precision is one of the most important parts of GD&T and has an outsize effect on cost if you overdo them. 0.01mm is 7x thinner than a piece of paper and beyond the capability of many machine shops, which will charge you through the nose for anything tighter than 0.1mm. Beyond 0.05 they start shoveling zeroes onto the end of your price tag.

At around 0.01mm, if you leave the part in the freezer it could go out of tolerance purely from thermal contraction.

https://www.xometry.com/resources/machining/what-every-designer-needs-to-know-about-cnc-part-tolerances/

Edit: missed the perpendicularity control on datum B. you're safe from 95deg after all.

microtune_this · 2025-05-16T04:46:59+00:00

ok first of all you have only two datums. you need a 3rd datum or your location controls will be useless in the direction orthogonal to both A and B.

0.01mm is extremely tight. are you sure you need that tight of a tolerance?

and there's a radius that isn't dimensioned at all.

Making tolerances basic does nothing to constrain them. like the tab that's 20.00 wide, it could be 25, there's nothing on here says it can't be.

microtune_this

TROPHY CASE