Figuring out how to generate a involute gear in Freecad

I’m thinking I’m going to have the printer running in a day or so… I got everything wired up I just need to assemble the extruder head.  One thing that I didn’t have was a small piece of ptfe to go over the thermistor. I had some thin stuff to go on the wires but..   I wound up wrapping the thermistor in kapton and then taping it down…

Anyway back to the topic at hand…  I’m thinking I want to print out something with a ring gear on it..  I did a little googling and apparently theirs a python script to do that for freecad called gear.pyHeres the link to the source http://free-cad.sourceforge.net/SrcDocu/df/d19/Gear_8py_source.html
I searched and I have it installed already..
jonasthomas@jonasthomas-Satellite-P305D:~$ locate Gear.py
/home/jonasthomas/freecad/free-cad/src/Mod/PartDesign/Scripts/Gear.py
/home/jonasthomas/freecad/qtcreator-build/Mod/PartDesign/Scripts/Gear.py

So I’m a bit rusty on this

Ok.. I had some problems running this… When copied this into a folder I use for py scripts fired up eric4 and ran my little special script..

#test.py
#this is a test routine to get run freecad entirely from the eric4 ide
import sys
# This is the standard location for the libraries in ubuntu.
#sys.path.append(“/usr/lib/freecad/lib/”)

#jonas thomas has his debug libraries here.
sys.path.append(“/home/jonasthomas/freecad/qtcreator-build/lib/”)

# jrheinlaender has his debug libary here.
#sys.path.append(“…/freecad-build-dbg/lib”)

import FreeCADGui
FreeCADGui.showMainWindow()
sys.path.append(“/home/jonasthomas/freecad/FreeCADPyCode/”)
import Gear

FreeCADGui.exec_loop()

And I pulled up this error

The debugged program raised the exception unhandled ImportError
“/home/jonasthomas/freecad/qtcreator-build/lib/StdMeshers.so: undefined symbol: _Z6aptrteidiPiP2R2iS1_RiRS1_S2_RS_S2_”
File: /home/jonasthomas/freecad/FreeCADPyCode/Gear.py, Line: 6

Break here?

I found something here about this
https://sourceforge.net/apps/mantisbt/free-cad/view.php?id=1081&nbn=4

Hmm.. It looks something with mesh… Soo I commented out the code like so…

import FreeCAD, FreeCADGui, Part, Draft, math
#, MeshPart, Mesh
from PyQt4 import QtGui,QtCore
App=FreeCAD
Gui=FreeCADGui

And I appear to be in business: