So next i am fusing on the 4 pattern mold two rectangles of 3 1/2 inches by 7 inches; one has a bottom layer of clear 3mm covered by 3mm red transparent. the other has 2 layers of clear 3mm covered by thin green transparent which will be a total of 8mm. That versus the other thickness of 6mm. So one of the issues I will look at will be how different thicknesses work at the same time. I am guessing not well, and I should have realized that but I did not think of it. So I am firing this at:
300dph.....................1360 degrees ....................hold 20 mins
300dph......................1470 degrees hold 10 mins
Full...............................900 degrees...................hold 1 hour
100dph..........................700 degrees......................off
I will be slumping it into a mold something like that.The 8mm thick piece came out the best but I think overall that my problem has been too hot and holding too long and I should be doing one project at a time unless the two projects I do are exactly alike. Armed with this information I am going to slump the 4 patterned texture CPI mold into a dish shape. See above . I will use a modified slump firing method as follows:
350dph.............................1100 degrees..............................hold 10 min
500 dph.............................1220 degrees .........................5 min
Full....................................900 degrees................................1 hour
100 dph.............................700 degrees.............................off
The mold I am using is a little deeper than previous mold but the glass is heavier so hopefully it should all work.
No comments:
Post a Comment