cutting an internal 6 spline drive

[thehomeengineer]

Hi All

On the crank shaft of my 3" scale Foden, that I am currently building there are two gears that move along this shaft. They are driven on six splines. The following link to my website shows how I cut the internal gears with a modified keyway guide bush I made and a standard keyway broach.
I hope this is of interest and useful. I will also post a link to the crankshaft build in another post for those that are intrested.

Practical Engineering

The Home Engineer