Quote:
Originally Posted by dataway
Very nice, my first attempt at threads was just printing straight from a cad file, 3/8 - 16 ... worked OK after being hit with tap and die. I didn't make any allowances in the file for the fact they were being printed.
Do you make any modifications to the thread profile for printing? I know some people will cut down the point of the threads to a small flat.
Do you recall the layer height you used on those prints? Nozzle size, material? Sorry for the questions but it's great to have the numbers to go along with the photos to get a fell for this process.
|
For the helical sweeps, I just sketched an equilateral triangle with s=pitch on the outer diameter of a extruded shaft for the male thread and the inner wall of the nut. That's not a true thread shape, as you mentioned (the point should be trimmed by h/4 and form a trapezoid) but I wanted max thread engagement, and the resolution of the machine is a limitation on the definition anyway.
Layer height was .007", T12 Nozzle, and ASA material.