WarmGlass.com

Or a professional board? Brock

Or the classifieds. Brock

. . . At WGW last fall the biggest problem I heard about was the poor quality of instruction that is rampant in our midst. Learning to fuse one weekend and teaching the next isn’t going to build us the kind of reputation for quality work that is demanded by professional organizations such as GAS. ...

I developed the Craig Shuffle, (where I reach into the kiln, pick up the loaded mold, and shake it around to center the blank perfectly) in response to problems I was having with slumping into woks. Beats flattening and re-slumping. Also, try a small bevel on the bottom edge of your blank, right whe...

Careful with that blob word, you'll raise the hounds.
Link doesn't work. Brock

Yeah, probably no faster than that. Hard to say, it depends on your kiln.

Sometimes they run, sometimes they don't.
I would advise a VERY slow ramp up.
Brock

I can't argue with your theory Charlie, but I have repeatedly done this, and to the human eye, there is no difference when re-flattened after slumping. I have done it mostly on bowls with geometric designs where, if the blank does not perfectly slump to the bottom and exact center of the mold, I can...

Please stop.
Thanks

Please stop what?
An open and frank discussion of techniques and results?
What's the problem?
Brock

I haven't done it yet, but I'm going to make a different piece. The blanks I have sandblasted with SiC, I'll finish eventually, to see what happens.

Ditto to Phil, good luck.

Well I think your response would deter people from trying. From doing it many times I can assure people that it works, most, if not all, of the time. In your case, where the glass stretched, all you had to do was go a little hotter, or stay hot a little longer, and your piece was salvaged. The diffe...

I don't have a definitive answer either, but the overwhelming preponderance of anecdotal evidence suggests that more problems occur with SiC. I am positive it is NOT a cleaning issue. I agree it is not a problem with surface blasting, which leads me to surmise that it may have something to do with t...

Looking forward to it. Consider me plied. Brock

It should work Catharine, with a light blast. Do we have to enter the Silicon Carbide vs Aluminum Oxide debate here? I vote for the latter. Is it possible to add any detail to the affected area?

Good luck,

Brock

PS More slides?

Well I hardly find one try conclusive. I think you have illustrated the schism between research and knowledge. Brock

The glass should not have stretched at all slumping into a mold, just changed it's plane. Have you had it stretch, then refuse to return to it's original shape, when you have attempted this, Tony?

Yes, Brad has given you sound advice. I have flattened, then reslumped bowls many times. There is lots of information on this Board, but it's not all good. You have to learn to assess it. Interestingly, here is one of the topics from the upcoming BECon: Internet Education in Glass: Is Lunch Really F...

Not yet. Send me a bunch, I'll happily post the results. Cecil

It IS necessary to drill a hole, or holes into the bottom of slumping molds to allow the air beneath the glass to escape. My favourite mold material is stainless steel. Brock

Hi Mel and Les,

It's about time you two Luddites joined us. We'll look forward to expert advice on all things castable. Brock