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Drop bowl

Posted: Tue Sep 18, 2018 11:29 pm
by Gusglass
I have a 3 layer (3/8") piece I'd like to use in a drop bowl exercise.

How big can I make the hole in the ceiling tile if I have a 12" tile and an 11" square piece of glass?

I want to do a 9" bowl with a 4 inch drop but worry that the sides might suck in and down the hole.

At what point am I asking for trouble when picking a size for cutting the hole in the concrete "tile" I bought fom you? 7", 8"?, 9"?, or can I make it even bigger?

Your wisdom is much appreciated.

Re: Drop bowl

Posted: Fri Sep 21, 2018 11:38 pm
by JestersBaubles
You need a few inches all the way around. To some extent, the bigger the span, the more glass you need around the edge. Also, you need a very controlled (read: low & slow) firing schedule.

You may want to look at Paul Tarlow's ebook on fused glass vessels (fusedglassbooks.com) - Creative Fused Glass Drop-out Vessels. He provides a lot of good information, including firing schedules and how you can reduce the risk of having pieces drop completely through.

Best, Dana

Re: Drop bowl

Posted: Wed Sep 26, 2018 4:36 pm
by FusedLightStudio
JestersBaubles wrote:You may want to look at Paul Tarlow's ebook on fused glass vessels (fusedglassbooks.com) - Creative Fused Glass Drop-out Vessels. He provides a lot of good information, including firing schedules and how you can reduce the risk of having pieces drop completely through.


Dana, what other books at that site do you recommend? I'm just wondering if they are very detailed since all are less than 100 pages.

Specifically I'm looking at:
Coldworking Glass without Machines
Easy to Make Gallery Stands (only 12 pages!!)
Stripcut Reimagined

Re: Drop bowl

Posted: Thu Sep 27, 2018 10:37 pm
by JestersBaubles
The stripcut book is great.
There are very few books dedicated to coldworking. Coldingworking without machines is the best practical "how to" book on the subject I've read. (Jonathan Schmuck wrote the Joy of Coldworking -- I didn't find it useful as a "how to". It seemed more like an equipment reference).
The stands book is OK, if you need ideas. But as you say, it is limited in info. It would be on the bottom of my list of books on the site for this reason (that and the "how to make a strip cutter" only because I don't need a strip cutter ;) ).

Full disclosure -- Paul and I are friends. But, I've been honest in my comments above.

Best, Dana

Re: Drop bowl

Posted: Fri Oct 05, 2018 8:39 am
by FusedLightStudio
JestersBaubles wrote:The stripcut book is great.
There are very few books dedicated to coldworking. Coldingworking without machines is the best practical "how to" book on the subject I've read.
The stands book is OK, if you need ideas. But as you say, it is limited in info. It would be on the bottom of my list of books on the site for this reason (that and the "how to make a strip cutter" only because I don't need a strip cutter ;) ).

Full disclosure -- Paul and I are friends. But, I've been honest in my comments above.


Thanks so much, Dana. Appreciate the full disclosure too :)

Re: Drop bowl

Posted: Fri Oct 05, 2018 5:23 pm
by jim simmons
[quote="JestersBaubles"]You need a few inches all the way around. To some extent, the bigger the span, the more glass you need around the edge. Also, you need a very controlled (read: low & slow) firing schedule.

Also take this very seriously, "Speed comes from the devil"

I have found that a good rule of thumb is to use i layer of glass for every inch of drop.
The other Jim