The tilt axis could benefit from a magnetic lock. So make a bracket
Somewhat tricky fixturing to support the thin walls
Cutting the slot
I love it when things fit
Ready for installation
Now, hook up the wires and write the software
The magnetic lock works great
Ready for a road trip to Eugene to visit Marcel Braun and the crew
On the bench at Marcel's studio
Ready to go
Marcel is getting ready
38mm tube fits
Square maria on 38mm
It works without a collar for a while, then drifts
Now, try a bubble
A large, but imperfect bonglike bubble
Jordan Kube brought his lathe at the same time I was there
Marcel Braun testing Proto 8