Broaching machine.
<video controls autoplay loop> <source src="https://s3-us-west-1.amazonaws.com/hmt-forum/spline_broaching_dc.mp4" type="video/mp4"> Your browser does not support the video tag. </video>
Previously:
https://www.homemadetools.net/forum/...642#post201524
https://www.homemadetools.net/forum/...578#post212463
https://www.homemadetools.net/forum/...027#post214047
https://www.homemadetools.net/forum/...679#post186264
https://www.homemadetools.net/forum/...074#post168546