Non-circular boring. (Showing off)

I was bored during the lock down and my mind started wandering.. I had a spindle encoder on my little mill and was wondering if I could gear the x/y axis to cut a polygon. One of the developers of linuxcnc did something similar on his lathe as a proof of concept.

So - it began...

https://www.youtube.com/watch?v=c9tWtEG1Exc

after figuring out my 144 count encoder wasn't nearly high enough resolution to do a decent job I upgraded to a 20,000 count per rev enocoder

Attachment 28063

Then putting it all together..

https://www.youtube.com/watch?v=PtD9w6lp8n8

Nice rhythm you got going there Sam..:encouragement: . . . Nice Job.

Amazing what is possible, thanks for sharing it here.