These are all the gears needed for a Mendel with a Wade's Extruder. This was made using Rhino3D's contour function to slice the gears into 3mm slices. Included are sliced versions of: http://www.thingiverse.com/thing:4305 (Wade's Gears) http://www.thingiverse.com/thing:2079 (Drive Pulleys) Stock Z-axis pulleysThese cut out well and look dimensionally correct. I have not glued them together and tried them on a Mendel yet.Cut from 3mm stock, glue the slices together, and enjoy.