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<joseph_>
teepee InPhase: Sorry it's been a few days since my last checkin. I did more investigation of the issue where edges were drawn in the render. I found that edges were always drawn by the default "Preview" shader because it was originally designed to only work in F5 mode when showedges was enabled. I added a new uniform to control whether edges are drawn. Visually my solution seems to work, but there are still failing tests (
<joseph_>
possibly from a separate issue I don't know about yet, so I'll investigate further)
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<teepee>
joseph_: on first glance it's likely caused by the WASM build to run with HEADLESS flag replacing part of the rendering stuff. I have to have a closer look, there's probably some sort of dummy class which needs to have a new dummy function
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<Friithian>
InPhase: your nails that I 3d printed, well, one of my friends has a webcam missing a screw/rod holding stuff together
<Friithian>
well, the nails fit
<J1A842894>
plastic bolts can be used as rivets when the head deform by force or heat
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<InPhase>
Friithian: lol
<InPhase>
Friithian: The threading library has some nuts and bolts that might be a better fix, where you can stick a small threaded end on the tip of a smooth cylinder for any rotational bits.
<Friithian>
that would make too much sense though
<Friithian>
and I already had these nails printed :D
<InPhase>
Friithian: Considering I repaired the dashcam in my car with duct tape rather than taking time to design and print a proper replacement part for it, I cannot object.
<InPhase>
I figured it's a transient part anyway as dashcam tech improves every few years.
<J1A842894>
blasphemy burn the witch .. using duct tape vs. 3d printing Ü
<Friithian>
lol
<J1A842894>
a repair requires at least 3 designs and 2 failed prints
<J1A842894>
and a result that is unusable for the temperature in cars ..
<Friithian>
oof
<InPhase>
I average about 1.2 designs per home repair. But I suppose my average is close to 2 prints per success, given parameters needing fine-tuning.
<InPhase>
My early work though sure built up a bucket of false start memorials.
<J1A842894>
or 1 print and duct tape/glue heat trimming .. lowered expectations .. yes i want this leaving a small gap open..
<J1A842894>
just found a bag of failed jig to contact and program arduino pcbs - which end in a final design that i maybe used 2 or 3×
<J1A842894>
but even with a working first prototype - you'll find something to improve so you are really satisfied
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<InPhase>
I typically do a few rounds of design and modeling of forces and such in my head before I start typing out the design.
<InPhase>
One design where that failed hard though is trying to make a thin low-plastic part to go on the back of those laminated cardboard backings of bookshelves to repair them after the nails start ripping out.
<InPhase>
I got to one that worked, but always seems to fail within a year or so as kids go slamming books into the back.
<InPhase>
I think it could work going much thicker probably.
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<InPhase>
Maybe I could figure it out though with some more thought. I gave up on that in 2017. :)
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<J1A842894>
you build things 3× first for your enemy then for your friend and at last for yourself ..
<J1A842894>
with 3D printing i often start a print with a rough idea just to get the proper feeling for the part design - to grasp it
<othx>
J1A842894 linked to YouTube video "Mindwandering – with Moshe Bar" => 1 IRC mentions
<Friithian>
I remind everyone who tries to work on a project at this makerspace that they will fail the first 2 times
<J1A842894>
yeah failing is essential to learn
<J1A842894>
“I have not failed. I've just found 10,000 ways that won't work.”
<J1A842894>
― Thomas A. Edison
<Friithian>
it's funny, people coming in expecting to learn an enitrely new skill and have their first product be perfect for what they want
<J1A842894>
i have seen this with kids that their stage of competence is so low they don't understand what they need to know to accomplish the task
<Friithian>
so have I, but these kids are university students
<J1A842894>
so they think .. that is easy i have seen a YT video about it
<J1A842894>
Ü adults are just bigger Childs that think they are grown up
<Friithian>
ngl sometimes the kids are better to work with
<J1A842894>
i think when you are highly educated (competence stage 4) in one area .. you often forget that you can still be stage 1 in a different area
<J1A842894>
like having an MD and teach him programming
<Friithian>
can I call these people stage 0 because they dont even want to learn?
<J1A842894>
you are right that is something new we increasing in the "smartphonezombie" times
<J1A842894>
there was a study showing that the potential availability of knowledge (internet) reduces your intelligence
<J1A842894>
so user have this expectations that it will work without effort
<Friithian>
the problem is that a lot of people coming in to this makerspace are here to do something for a class, so they just want their shit done and don't care to actually learn. But if they don't learn they can get it done
<Friithian>
yup
<Friithian>
darn this ABS part warped slightly and there's a crack :(
<J1A842894>
we have some scad github "issues" where user want their workflow to work and not caring about how it could be done.
<J1A842894>
i remember how i running in problems because i used loops with float incerments instead of ℕ and multiply a step value
<J1A842894>
just because i had no idea how this is working in the background and my expectation of "math" in programming was just wrong
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<J1A84>
Friithian cracked due to warping? old ABS?
<Friithian>
the shape of the part is condusive to warping and the printer I am using has an enclosed chamber, but it isn't actually a heated chamber. The top is open
<J1A84>
put a space blanked on top
<Friithian>
that'd mess with the bowdin tubes and cable
<Friithian>
we may be getting an air handling station for the printers soon so that'd help this issue
<Friithian>
or I could just not print out of abs
<Friithian>
I have no good reason to be doing so
<J1A84>
i know that metal printer use a lot of support to just holding parts in place as the thermal stress is so much higher
<J1A84>
so if you just print a solid cube .. you just need to remove the plastic that are not your model after
<Friithian>
oh I wish we could get a metal printer
<Friithian>
a markforge metal X system is only like $150k in total
<Friithian>
well, not including install and space and cost to run
<J1A84>
there are some filament metal binder systems .. sure you need to send your parts to sintering and debinding but you can use your normal printer
<Friithian>
well, normal printer plus a hot end that can survive the abrasiveness
<J1A84>
students probably love the idea of having metal parts - only till they need to remove the powder and supports and post processing
<Friithian>
fuck, they love the idea of a resin printer, but if we had one they'd be so annoyed having to do post processing (and do it safely)
<J1A84>
there is also a paste system that uses cartridges that are hydraulic pressed the goo and you just need a sinter oven
<InPhase>
Friithian: Grit is built up by practice with failure, which has unfortunately been weeded out of the educational system a bit by the self-esteem goals. I try to make sure my kids regularly try things they can't succeed at right away and advise them on the way success comes from repeatedly trying.
<Friithian>
very true
<Friithian>
hell, even I who knows this still has issues being annoyed when stuff fails the first time
<InPhase>
3D printing has a good role for practicing this I think, because of the low costs.
<InPhase>
When I had students do 3D printed rockets with OpenSCAD, the curriculum was built around everybody doing 2 designs.
<InPhase>
The second being after they saw everyone else test their first one.
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<J1A84>
also 3D printing takes away to work for manufacturing - could be quite frustrating to build something thrice
<InPhase>
Emotional perspective matters though. When my 6 year old got upset about a paper airplane fold not working well, I told him I would help him on another when he came back not upset. And he did, he came back calmed down later, I showed him again, and he made a good one.
<J1A84>
also i see that kids today often have poor motor skills (from too much touch screening )
<J1A84>
that self control is a very important thing to exercise
<InPhase>
I've never used that on a print, but I have epoxied print pieces together before, and I one time even epoxy coated an entire print with isopropanol thinned epoxy.
<InPhase>
Although the epoxy coat was then very slow to get not sticky, so I lacquer coated the epoxy coat to get rid of the stickiness. :)
<InPhase>
Better results were obtained in the future from rustoleum enamel spray paint, which I think is the way to go for a waterproof sealant.
<Friithian>
I've had really good luck with plastic weld and 3d prints
<linext>
anyone know of command-line slicers besides Cura, KISSlicer, slic3r, and PrusaSlicer?
<InPhase>
linext: juri_ has been working on some new slicer stuff for a while, and might have something working by now.
<linext>
i'm writing a version 2 of 3dpartprice.com
<InPhase>
This was step 2 on juri_'s conquer the world plan.