<peepsalot>
your $fn=3 setting get overridden btw. also its recommended to use $fs and $fa instead of $fn, to account for large and small features
<shan>
yes like knurling, is my cylinders approach stupid peepsalot
<shan>
I'm printing it now as i sent it to you
<shan>
and yes i got rid of the fns, i noticed the warning later
<peepsalot>
the cylinder approach works fine if that's the shape you are going for. the feature size seems a bit small so depending on your printer it may be difficult to reproduce
<shan>
it's 0.5mm, should be fine right?
<peepsalot>
ah, my mistake i was thinking 0.25mm diameter
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<shan>
this is my first time designing anything
<shan>
lets hope it goes well
<shan>
i fear i may have gone too snug on the fit
<peepsalot>
friction fit can be difficult to dial in with 3d printing
<peepsalot>
here is slightly fancier way to do it with rounded ends on the ridges if you want e.g. https://bpa.st/JFURQ also example of using $fs and $fa
<peepsalot>
hmm, only if you select the text and copy with ctrl-c though. clicking "copy snippet" does work normally
<shan>
peepsalot: woops, only just looking at this
<shan>
i got the first one back, as suspected the fit wasn't quite right
<shan>
almost though. tenths of millimeters
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<peepsalot>
you could try heating it up and mashing it on the shaft to reform the hole
<shan>
can't, have to print like 100 of these
<peepsalot>
shan: oh also i doubled the size of the ridges and reduced the count in my example code, forgot i made that change before you pointed out the diameter was 0.5mm
<shan>
i saw
<shan>
it's okay i am only importing your changes to mine because i futzed with the fitting and stuff too
<peepsalot>
ah, i thought it might be a one-off part
<peepsalot>
how was the ridge defiition in the end product?
<shan>
i didn't realise how small 0.5mm would be
<shan>
so i made them bigger
<shan>
they looked fine though, no weird issues
<peepsalot>
hehe, yeah sometimes scale is hard to really picture until its in your hand
<peepsalot>
on small features like that
<shan>
openscad is a hell of a drug
<shan>
the feedback loop is even crazier than web development
<peepsalot>
yep it can be addicting. i've got to head to bed, have fun
<shan>
thanks peepsalot have a good one
<shan>
i just got the second print back and ...
<shan>
it's too loose
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<J24k94>
shan to get a good fit use passmarks like having a few elevated ridges that friction fit
<J24k94>
pressing a ring onto a cylinder is hard but if that ring is a hexagon or star there is some diameter change due to deflection
<shan>
it's a D shape. i got the fit dialed in
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<J24k94>
shan just add a small cylinder top bottom lift right to fill the gap and allow some squeeze
<J24k94>
or leave holes to insert pieces of filament to tighten the fit
<J24k94>
just don't try to get the full surface to fit as this can't work reliably
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