Quote:
Originally Posted by Munchskull
Since the Ekocycle prints in PET I found that with exact measurements all the bolts would grip the print, cutting their own threads.
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Ah... that sounds about right... it would be interesting to use a caliper on the holes made and see how accurate the print was.
As I'm running some numbers please let me know how you ended up with:
0.113 and 0.1935 diameters?
I use a pitch diameter table such as this:
http://www.engineersedge.com/screw_threads_chart.htm
For example:
So for a screw #10 -24 it is .1900... if this mount uses a #10 and it cuts its own threads using 0.1935 my guess is the actual hole printed is roughly 0.17 - 0.18 diameter.
It's just nice to do a reality check and see if you are seeing the same numbers I see.
For me what I've been doing is using the helix and groove cut and print my own threads... I'll try to throw some stuff on grab cad at some point... I did take a sneak peak at solidworks for 2016 and they'll have their own threading stuff, but it won't work for 3D printers unless they have a solution that can compensate for precision loss.