NAME

       stl_threads  -  stl_threads  outputs  an  STL file with male or female threads per the ISO
       metric screw thread standard.

DESCRIPTION

       stl_threads outputs an STL file with male or female  threads  per  the  ISO  metric  screw
       thread standard.

       usage: stl_threads [ -f ] [ -D <diameter> ] [ -P <pitch> ] [ -a <angle> ]

              [ -h <height> ] [ -s <segments> ] <output file>

              Outputs  an  stl  file  with  male or female screw threads per the ISO metric screw
              thread standard (http://en.wikipedia.org/wiki/ISO_metric_screw_thread).

       -f - Outputs female threads (defaults to male).

       -D <diameter> - Changes to major diameter of the threads.

       -P <pitch> - Changes the height of a single thread, aka the pitch per the

              ISO metric standard.

       -h <height> - Changes the total height of the threads.

       -a <angle> - 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 <segments> - Changes the resolution of the generated STL file. More
              segments  yields  finer  resolution.  <segments>  is  the  number  of  segments  to
              approximate a circle. Defaults to 72 (every 5 degrees).

       -o <outer female diameter> - When generating female threads, this is the
              outer diameter. Must be greater than <diameter>.