Male and Female Threads Generated With stl_threads

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Created with stl_threads and other stl_cmds. Printed on my Makerbot Replicator 2. Read more about how this was created in my blog post. Instructions stl_cmd is a suite of command line tools for manipulating binary STL files. stl_threads can generate screw threads per the ISO metric thread standard. Unlike OpenSCAD solutions that perform many, many slow CSG operations, stl_threads directly generates the triangles necessary to represent the threads. Any resolution/configuration is pretty much instantly generated. This file was created with the following commands: stl_threads -D 8 -P 2 -h 20 -a 90 male.stl stl_threads -f -D 9 -P 2 -h 20 -a 90 female.stl stl_transform -tx 15 male.stl male_transformed.stl stl_merge -o threads.stl male_transformed.stl female.stl Documentation for stl_threads. stl_threads [ -f ] [ -D ] [ -P ] [ -a ] [ -h ] [ -s ] Outputs an stl file with male or female screw threads per the ISO metric screw thread standard. -f - Outputs female threads (defaults to male). -D - Changes to major diameter of the threads. -P - Changes the height of a single thread, aka the pitch per the ISO metric standard. -h - Changes the total height of the threads. -a - Changes the thread angle (degrees). The standard (and default) is 60 degrees. For 3D printing this can cause overhang issues as 60 degrees results in a 30 degree angle with the ground plane. Setting to 90 degrees results in a 45 degree angle with the ground plane. -s - Changes the resolution of the generated STL file. More segments yields finer resolution. is the number of segments to approximate a circle. Defaults to 72 (every 5 degrees).