OpenSCAD NPT / tsmthread 0.4
Description
This is a fast and flexible thread-profile generator for OpenSCAD. * It makes frugal, consistent, sound meshes. * It makes undistorted NPT theads! * It obeys $fs/$fa/$fn. * It uses arbitrary profiles - i.e. the difference between UTS and ACME is a variable. * It does multi-start threads. * It can compensate for printing steep pitches like ACME. As usual, all this stuff also lives on my site: http://burningsmell.org/3d/lib/tsmthread/ TL/DR ```` include <tsmthread4.scad>; // 5/8" 11TPI imperial threads, 3/4" long, ordinary thread profile imperial() tsmthread(DMAJ=5/8+$OD_COMP, PITCH=1/11, L=3/4, PR=THREAD_UTS); // TR30x3 trapezoidal threads translate([50,0]) tsmthread(DMAJ=30+$OD_COMP, PITCH=3, L=59, PR=THREAD_TRAP); // TR8 thread, 2mm pitch, 4 start translate([0,50]) tsmthread(DMAJ=8+$OD_COMP, L=10, PITCH=2, PR=THREAD_TRAP, STARTS=4); // Experimental: compensated leadscrew threads. Angle and depth must be specified. comp_thread(DMAJ=9+$OD_COMP, L=5, PITCH=2, STARTS=4, A=30, H1=0.25, H2=0.25); ````
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