mirror blank molds
Posted 18 August 2013 - 09:24 PM
Posted 18 August 2013 - 09:31 PM
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Posted 19 August 2013 - 07:14 PM
Posted 20 August 2013 - 05:27 PM
Posted 20 August 2013 - 08:28 PM
Posted 20 August 2013 - 09:30 PM
i anneal for nearly 50 hours which includes the cooldown to ambient.
I never got into the glass blowing as much as I should've to play with the kiln to anneal them. My teacher did that.
[Phila. College of Art]
Posted 21 August 2013 - 02:28 AM
Posted 21 August 2013 - 06:39 AM
Posted 26 August 2013 - 10:16 PM
Posted 26 August 2013 - 10:18 PM
Posted 26 August 2013 - 11:41 PM
Posted 27 August 2013 - 09:01 PM
When I did any plaster work I never measurd weights , even with the investments.
I would supersaturate the water with our schtuff. Sifting as i added to the water until I saw mountains of dry material all over.
So my point is maybe the ratio of water is wrong?
Posted 30 August 2013 - 04:43 PM
Posted 30 August 2013 - 09:48 PM
Posted 31 August 2013 - 06:35 AM
Posted 31 August 2013 - 06:39 AM
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Posted 31 August 2013 - 10:11 PM
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Posted 31 August 2013 - 10:42 PM
Posted 01 September 2013 - 11:54 AM
interesting pyrex kevin. i had a post a while back about pyrex bakeware being borosilicate glass. of course, its a big controversy today, but i did manage to find out some facts, and with my own testing. i read several articles that stated pyrex was actually pyrex before world kitchen bought them out.
European Pyrex IS still boro-silicate though - I actually approached the makers (who are now French, but with a big distribution in the UK) and they were happy to sell me tonne lots of shop damaged stock - we didn't get to the point of negotiating how much, because the project didn't get to lift off speed.