Steve,
Quote:
|
I have only just started on my mirror again after a winter hiatus due to the cold and damp weather and doing most of my grinding in the garage.
|
Once it gets hot, the pitch won't hold it's press. You're better off polishing in the cold. But yes, get any polishing done now. If it gets hot over the summer, you'll need to stop.
Quote:
|
I had a good finish and was a few inches out on my F/l, so went again, got a bad finish and had to restart all over just about, think my 25mm thick glass is approaching sub 20mm soon... /sigh. At 205mm by 20mm I'm at 10:1 ratio, so, I'll be needing all the hints and tips I can find for the mirror cell on the home made scope.
|
It's only an 8 inch diameter mirror. So even at 1:10, I'd think a nine point floatation cell should be plenty of support. You can build you own or I'm sure somebody sells them. Speak to the owner at Kunama Optics.
Joe