Slumping Glass/Face Molds
Moderators: Brad Walker, Tony Smith
Slumping Glass/Face Molds
Just curious if anyone can tell me what trick to use to keep glass from sliding off of a face mold prior to and during fusing? The nose just seems to get in the way. Any info. would be greatly appreciated! ]
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Prop it on kiln furniture set on each side of the mold, about an inch or so above the nose. The glass will slump onto the nose first. Watch it, then remove the furniture as soon as it starts to drape over the nose. Then increase the temp a bit and let it finish the job. The chin usually takes the longest to slump.
And make sure you kilnwash the kiln furniture.
And make sure you kilnwash the kiln furniture.
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folding glass on face
I've had problems with the glass folding somewhere between the chin and ear. Everything went OK except for the fold of glass. Would the kiln furniture prevent that from happening as I just balanced the glass on the nose. Thanks Linda
Re: folding glass on face
If you're making a mask, you should just slump some thin float, to define what actual shape your blank should be. Refine it by observing the results and cutting/trimming away excess glass from the shape of the original blank for the next try. It took me several attempts to get the shape I needed for a torso blank, but now I have a template I can use forever.Linda Hassur wrote:I've had problems with the glass folding somewhere between the chin and ear. Everything went OK except for the fold of glass. Would the kiln furniture prevent that from happening as I just balanced the glass on the nose. Thanks Linda
If you use the band technique, it seems to work okay, you probably won't get a lot of details off the side of the mold, but the face will work. Brock
My memory is so good, I can't remember the last time I forgot something . . .
1) AssistantsJeri Dantzig wrote:What are the alternatives if you are:
1) Chicken about lifting the lid of the Jen ken when that hot
2) Chicken because I don't have a fireproof hood
3) Chicken because I would like to keep my hair thank you
Clucking girl Jeri
2) Assistants
3) Assistants
4) Make something else
Brock
My memory is so good, I can't remember the last time I forgot something . . .
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More beef!Jeri Dantzig wrote:What are the alternatives if you are:
1) Chicken about lifting the lid of the Jen ken when that hot
2) Chicken because I don't have a fireproof hood
3) Chicken because I would like to keep my hair thank you
Clucking girl Jeri
Well, you can leave the glass just on the edge of the kiln furniture and pray that when it droops over the mold it slips off the furniture and manages to conform to the mold without hitting the sides of the furniture or messing things up.
It's a gamble, but then it's probably a gamble being a chicken in a world full of meat-eaters.
I wouldn't think you'd need a fireproof hood. Just keep your face back when you first open it, to let the blast of hot air escape (like you do with an oven baking chicken, if you remember....), then don't get your face closer than you need to. And keep your hair tied back -- it makes the chicken hard to chew. Protect your hands, though.Jeri Dantzig wrote:What are the alternatives if you are:
1) Chicken about lifting the lid of the Jen ken when that hot
2) Chicken because I don't have a fireproof hood
3) Chicken because I would like to keep my hair thank you
Clucking girl Jeri
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I don't think slumping into is any easier, and you'll get mold texture on the "face" of your face. Brocklauri wrote:As a sculptor I got interested in slumping face mask.
Isn't it easier to slum *into* mold instead of over it?
What are the pros and cons?
-lauri
My memory is so good, I can't remember the last time I forgot something . . .
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I've slumped over ceramic face masks often. I really don't think that there is a general rule of thumb about slumping into or over, steel or cdramic. Success, in my opinion, is particular to the molds shape, not it's composition. Brocklauri wrote:The background for my question is
that I slumped 3/4 thick glass *over* a ceramic mold
(because I wanted the face (=mold marks) on the back.
On both attempts the glass broke over the midline of the face. Glass contracts more than ceramics.
-lauri
My memory is so good, I can't remember the last time I forgot something . . .
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Re: Slumping Glass/Face Molds
can someone post the make and model number of any ceramic mask that were easy to slump over?
I would like to try out some of my "portrait" designs in a mask format. THanks!

Re:
I'm wondering....is it possible to use a broader-based support (like a triangle or a cone) attached to stainless steel wire put through an observation hole and to pull the support from under the glass from outside the kiln as the glass starts to drape over the nose? Watch out, that wire may be hot!!! So many thoughts, so little time to experiment. The thought of working in a hot kiln literally scares the hell out of me!Brad Walker wrote:Prop it on kiln furniture set on each side of the mold, about an inch or so above the nose. The glass will slump onto the nose first. Watch it, then remove the furniture as soon as it starts to drape over the nose. Then increase the temp a bit and let it finish the job. The chin usually takes the longest to slump.
And make sure you kilnwash the kiln furniture.
Jerry
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Re: Slumping Glass/Face Molds
It is all about the shape of the mold. I was working with a potter. She gave me a bisqued face. I could set the glass balancing between the nose and the chin, such that it was at an angle. I fired slowly enough to make an excellent drape over, conforming to the face and spreading out flat on the shelf around the face. The catch was that both times I did this, the glass cracked, during the cool down, because the glass shrunk more than the ceramic mold. So, I made a rubber mold from the ceramic face, and cast a refractory face. I did the same setup, and got excellent results. The expansion characteristics of the refractory shape caused it to shrink more than the glass during cool down, leaving me glass that was easy to remove, and shaped just the way I wanted.
Bert
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Bert Weiss Art Glass*
http://www.customartglass.com
Furniture Lighting Sculpture Tableware
Architectural Commissions