Hi Charles
I’m not sure that anyone on this forum has actually tried flexing a mirror. The topic has come up but I don’t recall anyone reporting on actually trying it. There is this thread currently on Cloudy Nights:
https://www.cloudynights.com/topic/7...-a-paraboloid/
You might get some answers there.
BTW I saw your thread in Hobby Machinist linked in the other thread. Very Impressive! I noticed you have built a grinding/polishing machine. Any reason you don’t want to parabolise the mirrors? At F6 it shouldn’t be too difficult.
I’ll be following your progress. I’ve only looked through a big binocular once and the view still haunts me. It was a 10 inch and the 3D image was spectacular.
Rod