Drop ring question - WarmGlass.com

Drop ring question

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BobbieMatus
Posts: 50
Joined: Tue Jul 08, 2003 12:21 am

Drop ring question

Postby BobbieMatus » Sat Sep 27, 2003 5:39 pm

I did a fluted 7" drop ring, and one side slipped down more then the other so it is an uneven drop. What causes this to happen.
Bobbie

charlie holden
Posts: 260
Joined: Thu Mar 13, 2003 8:26 pm
Location: Atlanta

Postby charlie holden » Sun Sep 28, 2003 6:15 pm

I can't tell if the rim is uneven or the bowl. But in any case, it can be inconsistencies in the glass, uneven heating in your kiln, not exactly level mold, not exactly centered placement of the glass, etc., etc.

One thing that often happens with drops is that the center slumps before the rim since there is likely more weight in the center and the rim is cooler, since it is against the mold. Sometimes the rim will even lift up off the mold before it begins to slump and the glass can slide into the center some. It will never do this evenly if it happens. Look into your kiln during the early stages of the slump to see if the rim is lifting. You may want to slow down the ramp up if that's the case.

ch

BobbieMatus
Posts: 50
Joined: Tue Jul 08, 2003 12:21 am

Postby BobbieMatus » Mon Sep 29, 2003 9:59 am

thanks for your help. I have been ramping at 400 degrees, do you think that's too fast??
Bobbie

charlie
Posts: 961
Joined: Mon Mar 10, 2003 3:08 pm

Postby charlie » Mon Sep 29, 2003 12:55 pm

weight, or lack of it, in the rim. you can make the rim a larger diamegter and trim it off, or add weights on top of the glass and trim that part off, or go really slowly and perhaps it will stay put.

BobbieMatus
Posts: 50
Joined: Tue Jul 08, 2003 12:21 am

Postby BobbieMatus » Mon Sep 29, 2003 3:59 pm

sorry, I don't understand. How do you add weights to the rim???
Bobbie

charlie
Posts: 961
Joined: Mon Mar 10, 2003 3:08 pm

Postby charlie » Mon Sep 29, 2003 4:42 pm

cut up shelves. kiln supports, random pieces of ceramics. i use leftovers from tile jobs in lots of stuff. dams. supports for pot melts, etc. just be sure you use high-fired ceramics, like porcelain tiles. granite tiles won't hold up. damhikt.


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