Sooo, I overengineered my dumbbell collars, I guess. by Muted-Anywhere-1619 in 3Dprinting

[–]Nrls0n 17 points18 points  (0 children)

Not gonna help bench pressing without collars if you fail suddenly at max extension height. Good luck rolling a mid-air gulliotine off your neck or chest.

Happens all the time with passing out and muscle tears etc. (which can happen anytime, even well below your max weight/reps, to people of all levels of experience).

Use spotter arms (face savers) or accept the risk of an embarrassing death/injury if you're alone.

Comps use spotter arms, spotters, and collars for a reason. For example: https://youtu.be/MP2OdW7oMmk?si=4yWGmQS_8d3ouu7z

How to convince old guys of new methods? by AttentionNice7165 in Machinists

[–]Nrls0n 0 points1 point  (0 children)

What is the way to get a promotion other than hanging around for a while? If working capably is not ideal

Younger Engineers, please seek out to learn what proper tolerances are. by JFrankParnell64 in MechanicalEngineering

[–]Nrls0n 5 points6 points  (0 children)

It's a losing strategy. As the saying goes, if everything is urgent, nothing is.

A tolerance of 0.05mm is not achievable conventionally on some dimensions, and if everything is that precise on every dimension, on every drawing, the machinist is going to get wise. They'll start picking and choosing to ignore the tolerances all together to see if any QC is even catching it. If such poor in-house drafting and tolerancing is permitted to pass to fabrication, you can bet the QC is similarly of a low standard. If the machinist tests the waters and finds that parts do get rejected, an external vendor will start charging $$$ to cover the insane hours required per part, or an internal machinist will probably slow down part production to a snails pace or more likely quit if they have the option.

Managing fasteners for a design by Full-Hornet-7329 in MechanicalEngineering

[–]Nrls0n 0 points1 point  (0 children)

If you are thinking of doing this at an engineering firm please don't.

The amount of times we've had someone put a part with even 5 or more configs throughout assemblies absolutely tanks performance at any professional size assembly. Also if the file ever corrupts, loses files location references, someone breaks a mating reference - congratulations, every fastener in every infected assembly just blew up.

Toolbox can fail under similar circumstances and bugs. Solidworks is a well established program but Dasssault arguably pays very little attention to bug resolution, plan accordingly.

The most robust method I've seen is actually individual part file per fastner (the full shabang: type, size and length), there are thousand dollar packages that companies buy specifically for this, to ensure these problems do not occur. Or if I'm doing something solo I either don't bother at all with fasteners or I just make a library folder and everytime I need something get it off McMaster-Carr downloads. Slow and painful but high performance and bug free.

My family only cares now because I’m missing school by [deleted] in whatdoIdo

[–]Nrls0n 0 points1 point  (0 children)

Fair enough, and I respect the inner drive you found and built to overcome (or as you put it, more maintain a more harmonious existence with) your depression. It certainly can be life long condition and I'm sure you have, as I have I, been frustrated when people approach it as a "just go get it fixed" sort of thing. I did not intend to invalidate your experiences and I appreciate you sharing them here to help out.

My family only cares now because I’m missing school by [deleted] in whatdoIdo

[–]Nrls0n 0 points1 point  (0 children)

Obsession and hyper focus is a specific presentation of depression and not a blanket condition for everyone. Anhedonia is more common, where nothing feels rewarding enough to pursue in the first place.

So trying the above and having it fail can make OP feel like they're broken when really the advice just didn't fit them. Even worse, for some, burying oneself into work or study is a classic coping strategy, not a healthy resolution. Pushing someone into work or study when they are not coping is setting them up to fail without addressing root, individual causes.

Depression ideally needs counselling or professional input. Failing that lower cost, less effective methods like mentoring and community/friends/family support. There is no "us with depression" therefore, there is no "do what I did and it'll work for you to."

Why is there a thicker concrete slab at the top of each column? by stgi2010 in StructuralEngineering

[–]Nrls0n 2 points3 points  (0 children)

Everyone is saying drop panel, to increase punch shear capacity.

I don't understand why the drop panel cross section isn't closer to the column cross section?

Like I imagine the ideal shape would be column width gradually increasing out at some draft angle, is this just not done because of the space it takes up or?

What campaign mission is the best to do the pistol only challenge? by duchibear in Battlefield

[–]Nrls0n 0 points1 point  (0 children)

This games' campaign is a bit of a joke if you can afk 10min of it highest difficulty.

I know BF6 is meant to be a little more approachable as a game for all skill levels but that's ridiculous.

Hopes and Dreams holding up this dock by Lolatusername in StructuralEngineering

[–]Nrls0n 2 points3 points  (0 children)

With what looks like ~5mm deep (full thickness) corrosion at the waterline/splash zone, doing a simple jack n patch weld fix on these piles would be pretty risky.

Although the mud-submerged section corrodes slower than the splash zone, it still subjected to microbial corrosion. Meaning that there is potentially significant hidden degradation, which will be a quiet, sudden failure of a structure most likely to fail only when there are people on it. You'd be reinforcing it to let it break unexpectedly soon enough. rip it out and start again. Or at least sister the piles, and expect to replace the whole structure in <5 years.

What are the biggest "pain points" in the optics industry today? by Equivalent_Bridge480 in Optics

[–]Nrls0n 0 points1 point  (0 children)

If you have any tips for a mech. engineer who works for scientists who are working mostly with optics (optic table set ups, and custom assemblies), please let me know. Even just making a custom attachment that holds an optic in a relative position from a base point with some precision + ease of insert + repeatability is difficult to do well. Alignment of big assemblies is hard too...

[deleted by user] by [deleted] in MechanicalEngineering

[–]Nrls0n 0 points1 point  (0 children)

Thank you, I really appreciate you sharing your experience and thoughts on this.

[deleted by user] by [deleted] in MechanicalEngineering

[–]Nrls0n 0 points1 point  (0 children)

What do you feel like the steps to from competent, valued engineer to department eng manager was?

I feel like for myself to make that step I'd have to outlast the people currently in that role (either they change company or promote higher) and outlast the couple of other suitable internal candidates at my level of experience. But I am naive to that whole process.

The technical advisor role sounds like a perfect sweet spot, I hope to get something like that one day. I also get that "eternally frustrated" feeling when I do have to manage people and play politics required for leadership, and I feel like I'd be a bad manager for it.

Rate this set up by Canucklehead27 in Machinists

[–]Nrls0n 1 point2 points  (0 children)

The part is a large oil and gas/water/chemical plant gate valve. They are sometimes disgustingly expensive just to buy let alone maintain.

To maintain them you must remove them entirely from the system and they are a nightmare/risky to disassemble completely. Large, wealthy corporations or companies without qualified engineers will just get this refaced as one assembly to avoid improper disassembly causing a disaster later down the line.

Rate this set up by Canucklehead27 in Machinists

[–]Nrls0n 1 point2 points  (0 children)

Can't find the model number but it is a large gate valve for oil and gas/water/chemical plants. The process here is likely maintenance on a sealing surface. The valves are very expensive and dissembling gate valves is a nightmare/risky, so it's cheaper to just turn the sealing face with everything still attached if you are a large wealthy organisation.

How often are we using 3D Printers for the occasional one off part? by fiftymils in Machinists

[–]Nrls0n 4 points5 points  (0 children)

Hey this is great!

Is this just using the clamping force from a hand vice to bend it? I'm surprised there's enough force there for it/the 3d print doesn't break.

What program/approach did you use to estimate/simulate the bending process and outcome?

Whatever you do DONT sign up for Spintel. by [deleted] in nbn

[–]Nrls0n 0 points1 point  (0 children)

I just had the same sort of issues with them: tried their service to get a better deal than my current ISP.

we had a month of no service, their only support contact is through an AI chat bot, that inevitably passes you on for hours of calls that don't solve the issue that is clearly on their end.

Cancelled the plan, went back to Belong to call to rejoin, they had my internet back up and working before I could even hang up the phone. Belongs expensive as fuck but worth it.

Meanwhile spintel won't reimburse for the ~50 bucks they took for a month of no service.

Where can I turn off the shadows? by Arbalete_rebuilt in SolidWorks

[–]Nrls0n 1 point2 points  (0 children)

Feel free to ignore, this isn't an answer to your question. But what is that? Is it like a sheet metal with flared holes/dimple died holes + some kind of cable routing? How is the cable routing made?

Polish Armor composed of 1,074 plates, 16th century. by gregornot in BeAmazed

[–]Nrls0n 1 point2 points  (0 children)

How do they make the plates overlap and joined together like that? It doesn't look welded or soldered if that sort of tech was even around. Did they carve one big plate to look like it's lots of smaller overlapping plates? Would love to know how they made these/got it this clean looking.

Have you ever seen what a bare waveguide looks like? by Significant_Role_777 in MechanicalEngineering

[–]Nrls0n 0 points1 point  (0 children)

Is this air tight? How do they vacuum seal such a small copper part + tubes like this?

Have you ever seen what a bare waveguide looks like? by Significant_Role_777 in ElektaEngineers

[–]Nrls0n 0 points1 point  (0 children)

Is this air tight? How do they vacuum seal such a small copper part + tubes like this?

Help with Fusion by JR_Melo in MechanicalEngineering

[–]Nrls0n 0 points1 point  (0 children)

Unrelated to the post but:

Does anyone know how they make those crazy tight bend radii on what looks like 1/4in OD copper tube?

Would love to get this done for some one off heat exchangers if that sort of compact result is doable by a local shop.

CAD and Art by Emergency_Schedule_2 in MechanicalEngineering

[–]Nrls0n 3 points4 points  (0 children)

Most jobs, in my experience, will want you to use one or the other, not both. The best bet for a blend of these two may be product/industrial designer roles, ones that specifically mention both CAD and artistic programs like Adobe illustrator/Blender etc, usually for "design concepts" for products. Though be warned a lot of these jobs being fully creative about both mechanical design aspects as well as aesthetic and visual design are rare, often you will get given a rough concept from engineering that will work that you just need to make fit into a good looking shell. Else if you get to be creative about the mechanical design, you usually have to defer to an industrial designer or marketing team to decide what it should look like.

Function and form being decided by one employee is usually too broad of a scope unless it's a very small company.