Hi Barry,

Thank you! I am going to 3d print one tomorrow morning!

Wayne

Hi Barry,

The screw and nut were printed together at the largest tolerance. It worked spectacular with the nut freely going up and down the screw.

The first attempt was at a lower tolerance and the nut seized to the screw. Will be looking for a good midpoint. Your program works great!

Thank you,

Wayne

Hi wayne,
Your printer will have some spacing settings like a step size, pass depth etc... these will affect your tolerance ability there... so the tolerance wont be a direct correlation to a printers "tolerance"...

A step size on an angled surface, to achieve a tolerance on something that has to "slide together" will be exaggerated.....

Just a note....

Hi Wayne,
I printed a 12mm dia screw x 50mm and 3 nuts x 20mm long with a 2mm pitch 90 degree form separately.
The clearances 0.15/0.2/0.25mm.
The 0.25 nut no problem.
0.2 nut required working along the screw a couple of times but fine.
The 0.15 would only go onto the screw about 12mm with a lot of working back and forth.
I think the 0.15 clearance would have worked with a shorter nut maybe its down to shrinkage.
Anyway glad it works.
Cheers
Barry

Great work Barry and Wayne,
Interested to know if the node editor you designed can create a part that is like a hollow sleeve; with thread on inside
and outside?
-Stefano

Hi Stefano,
yes you can disconnect the cylinder and produce the screw for the outer size add a head boolean union, select it and use that instead of the cylinder in the boolean operation of the inner thread.
Then enter the details for the inner thread with desired clearance and rerun the nod.
Hope that's clear.
Barry

Brilliant cheers Barry, will get to this soon and give it a try - looks great! - stefano