@jmjira said: Hello: I'd like to write a ruby script for a pipe flange and rather than input the dimensions of the flange (pipe size, thickness, outside diameter...) Thanks Joe Sorry can't help with the coding stuff, have you tried engineeringtoolbox.rb http://sketchup.engineeringtoolbox.com/ or the piping ruby at http://www.3skeng.com/ both work and are free john