p1mrx

joined 1 year ago
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[–] p1mrx 4 points 9 months ago

who is life

[–] p1mrx 5 points 9 months ago (1 children)

nice 45° angles.

[–] p1mrx 6 points 9 months ago (2 children)

Didn't he already kick ass in HL1?

[–] p1mrx 8 points 9 months ago (3 children)

I suggest uploading some default-size STLs so we can view the parts in 3D.

[–] p1mrx 6 points 9 months ago (2 children)

The difference is, Elon Musk sometimes thinks that it would be pretty neat if his private jets were electric. When has Taylor Swift ever done that??

[–] p1mrx 1 points 9 months ago* (last edited 9 months ago)

I haven't done any tests where the tensile/breaking strength is relevant, just rigidity. Maybe it's possible to optimize the infill based on finite element analysis or something, but that's not a rabbit hole I'm looking to go down.

I have tested that an all-walls sandwich (PrusaSlicer "solid infill every 3 layers") does not improve rigidity. So far nothing beats 1-wall + rectilinear in that department.

[–] p1mrx 4 points 9 months ago* (last edited 9 months ago)

Okay, but if my 2-wall hook bends into a straight line, then I don't really care about the durability of that no-longer-hook-shaped object.

Edit: I agree that 2-wall could make sense, if your goal is to reuse the hook (with a more appropriate load) after the heavy load falls off. That's analogous to protecting a wire with a circuit breaker.

[–] p1mrx 9 points 9 months ago

But the long arm of the law can't possibly be tyrannical! 🦖

[–] p1mrx 18 points 9 months ago* (last edited 9 months ago) (2 children)

That's why I put everything in the dishwasher. Knives, scissors, sponges, brushes, nonstick pans... if you can't survive the dishwasher then GTFO my kitchen.

[–] p1mrx 3 points 9 months ago

Brown witches are extracted from lignite coal using gasification.
Pink witches are produced by electrolysis using nuclear power.

[–] p1mrx 3 points 9 months ago (6 children)

It's not really clear what you're saying, because they're both "my design". Could you specify 1 wall vs. 2 wall?

[–] p1mrx 10 points 9 months ago* (last edited 9 months ago) (1 children)

I just tested this hook by hanging a 5 gallon bucket and gradually adding water. PLA 1 wall = 1710 g, 2 wall = 1178 g. The thing is, a 1.5 mm hook fails by straightening rather than snapping, so rigidity is more important than strength.

Edit: I also tried PETG: 1 wall = 1441 g, 2wall <998 g (failed to hold the empty bucket)

So the 1 wall hooks can support >40% more weight before straightening enough that the bucket slips off. That's more significant that I expected.

Edit2: Part of that 40% difference is due to friction; the 1-wall hook has a rough surface that makes the bucket less likely to slip off. But even with bluetack on the hooks, 1-wall has less deflection than 2-wall for the same weight.

Another confounding variable is the weight of the hook itself: 2-wall = (0.83g slicer, 0.78g actual); 1-wall = (0.95g slicer, 0.88g actual). I don't know if that extra weight is coming from density or volume, but either way the stronger hook is more expensive.

Sigh, reality is so complicated.

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