Pin Connectors V2
Description
The syntax is totally different as well. It was kind of dumb to use global variables in the last version, now you pass the variables to each method so it's easier to have pins of various sizes in one project.
Instructions
// r = shaft radius
// lh = lip height
// lt = lip thickness
module pin(h=10, r=4, lh=3, lt=1, side=false)
// side = set to true if you want it printed horizontally
module pintack(h=10, r=4, lh=3, lt=1, bh=3, br=8.75)
// bh = base_height
// br = base_radius
module pinpeg(h=20, r=4, lh=3, lt=1)
// h = in this case, h is the length of both pins combined
module pinhole(h=10, r=4, lh=3, lt=1, t=0.3, tight=true)
// t = tolerance
// tight = set to false if you want a joint that spins easily
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I just uploaded a new version that I'm much more happy with. One thing I did notice was that pins printed at 0.4 layer height are not as strong as 0.3 layer height. Also, the width over thickness ratio seems to make a big difference as well - 1.67 w/t are much stronger than my other profile that had a 1.5 w/t.
Hmm, this is the first part I've made where OpenSCAD has given me a non-manifold STL. The holes are fine, but the pins seem to have a problem. Netfabb fixed it for me, but this should definitely be looked into. Especially since I didn't think OpenSCAD *could* make a non-manifold STL, given that it's built on CGAL.
Perfect! I was just thinking how nice it would be to have access to the tolerance values. The shape looks better too; I'll definitely be using these soon.
Printing this now. I printed the previous version and broke two of the pins trying to insert them. The bevel at the front of the pin looks like it will solve my problem.
Are you printing with ABS or PLA?
I am using ABS as well. I printed out plate.stl but I cannot get the pins to fit in any of the holes. I have broken two of the push pin type pins trying to get them together.
It seems to me that because of the layered extrusion process the flat pins will be substantially stronger than the push pins in their current configuration. It may make sense to make push pins that can also be printed flat. They would look like a T instead of a pin with a cap. Printing the first s
et and breaking two push pins seems to support this theory.
If I get some working T pins I will send you the updates.
I'm using ABS which will tend to bend more than PLA. If PLA is too brittle, you might want to try the horizontal pegs and/or reduce the lip thickness so it doesn't have to flex quite as much.
License
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Hmmmmmm....
I have a use for these!