OpenSCAD NPT / tsmthread 0.4

thingiverse

This is a lightning-fast and adaptable thread-profile generator for OpenSCAD.\r\n* It produces thrifty, consistent, clear-cut meshes.\r\n* It crafts undistorted NPT threads with precision!\r\n* It strictly adheres to $fs/$fa/$fn settings.\r\n* It utilizes arbitrary profiles - in other words, the difference between UTS and ACME is a variable parameter.\r\n* It generates multi-start threads with ease.\r\n* It can correct for printing steep pitches like those found on ACME threads.\r\n\r\nAs usual, all this information also resides on my website: http://burningsmell.org/3d/lib/tsmthread/\r\n\r\nTL/DR\r\n````\r\ninclude <tsmthread4.scad>;\r\n\r\n// 5/8" 11TPI imperial threads, 3/4" long, ordinary thread profile\r\nimperial() tsmthread(DMAJ=5/8+$OD_COMP, PITCH=1/11, L=3/4, PR=THREAD_UTS);\r\n\r\n// TR30x3 trapezoidal threads\r\ntranslate([50,0]) tsmthread(DMAJ=30+$OD_COMP, PITCH=3, L=59, PR=THREAD_TRAP);\r\n\r\n// TR8 thread, 2mm pitch, 4 start\r\ntranslate([0,50]) tsmthread(DMAJ=8+$OD_COMP, L=10, PITCH=2, PR=THREAD_TRAP, STARTS=4);\r\n\r\n// Experimental: compensated leadscrew threads. Angle and depth must be specified.\r\ncomp_thread(DMAJ=9+$OD_COMP, L=5, PITCH=2, STARTS=4, A=30, H1=0.25, H2=0.25);\r\n````