Hexy 635mm bino update---tubes skywards

[twinhexydan]

Thanks tony,

do appreciate your input time. would be nice to get it right first time must say.

Kiln I got is electric and will go to 1700c . Has a digital control box, so slump ramp and annealing process will hopefully be smooth.

regards Dan

[Peter Drew]

Dan. Yes, all my reflecting telescopes used David Hinds mirrors, I used only the best!

[tonyh66]

a quick spin around internet and a question on my art glass forum has yielded some interesting stuff, apparently it takes approx 28 hours to anneal 38mm thick glass add in a couple of hours to slump and fuse and you are looking at nearly 2 days kiln time.

I remember the annealing program for windscreens ran for about 8-9 hours but the glass was nowhere near as thick. I also have been given a book reference to look at, apparently it has some detail about a telescope mirror in it. Will post the reference when im a bit more together and not at work

[twinhexydan]

Thanks tony,

looking forward to your findings.

Having a go today at installing the secondary cages on the big tubes as the sun is shining.

dan