Search found 260 matches
- Thu Apr 01, 2004 10:53 am
- Forum: Kiln Casting
- Topic: Casting Devit
- Replies: 4
- Views: 7179
Re: Devit
Lauri, I've heard all that before and would agree with part two except for the way the devit showed up. It's really strange. It is on the lower half of the piece (upper as you look at the finished product) while the rest is clean! That tells me that the glass in the bottom of the mold, which was in...
- Thu Apr 01, 2004 10:26 am
- Forum: Kiln Casting
- Topic: Sorry, volume weight problem again...
- Replies: 22
- Views: 29503
- Wed Mar 31, 2004 1:04 pm
- Forum: Kiln Casting
- Topic: plasticine clay Q?
- Replies: 12
- Views: 15823
Depending on the details, you might want to cast your model in rubber or silicone instead of plastic. If so make sure that the rubber you choose will work with the plasticine. Some plasticines have sulfur in them and some rubber mixes react to sulfur. I don't know if this is a problem with silicone ...
- Fri Mar 26, 2004 1:16 pm
- Forum: Techniques and Tools
- Topic: Pot Melt too hot? cloudy underbelly
- Replies: 3
- Views: 5151
- Thu Mar 25, 2004 1:55 pm
- Forum: Techniques and Tools
- Topic: Bouncing kiln floor
- Replies: 21
- Views: 24436
What I really want to discover is just how thick a slab of glass I can anneal on the floor of my kiln. Eventually I will get around to doing comprehensive testing on this. I can borrow the necessary equipment for the tests. I just need a compelling reason to do the tests, beyond curiosity. Last sum...
- Wed Mar 24, 2004 11:28 pm
- Forum: Kiln Casting
- Topic: Cobalt Bottles for Casting ?
- Replies: 14
- Views: 19884
Realize that plaster/silica is not happy at any temps above 1400. 1675 is way above 1400. There are reasons people spend big bucks to cast with Gaffer glass or Schott. The lead lowers the maturing temps making for more reliable castings. hi Bert. my question is a bit off topic. i use a dry 50/50 mi...
- Wed Mar 24, 2004 11:20 pm
- Forum: Kiln Casting
- Topic: Sorry, volume weight problem again...
- Replies: 22
- Views: 29503
Re: It´s not working
Hi I´m trying to make a plaster/silica mold, but it seems impossible :?: I´ve made the mix of plaster and silica by weight. Mixed very well... Then I tried to add it to 1 liter of water - result was a heavy and very very thick mess... I tried 1,5 litres and 1,75 litres the result of both was a me...
- Wed Mar 24, 2004 10:53 pm
- Forum: Techniques and Tools
- Topic: Bouncing kiln floor
- Replies: 21
- Views: 24436
I think there can be some warping even if the plate isn't welded. I've seen plenty of marvers that are a half inch thick or more of floating plate that have warped over time from hot glass being rolled over them. This came up in a small way when I was building the kiln and the guy doing the welding ...
- Tue Mar 23, 2004 8:39 pm
- Forum: Kiln Casting
- Topic: Cobalt Bottles for Casting ?
- Replies: 14
- Views: 19884
- Tue Mar 23, 2004 8:24 pm
- Forum: Techniques and Tools
- Topic: kiln brick repair ?? after overheating
- Replies: 9
- Views: 10648
- Mon Mar 22, 2004 8:20 pm
- Forum: Kiln Casting
- Topic: Sorry, volume weight problem again...
- Replies: 22
- Views: 29503
No it won't work out to 3 litres since the powder has lots of air mixed in between the grains. You can't look at a litre of powder and tell how tightly it is packed. Because of this we usually measure powder by weight. Most people mix 50% plaster and 50% silica by weight. I think it is good to mix t...
- Mon Mar 22, 2004 8:01 pm
- Forum: Techniques and Tools
- Topic: New Orleans
- Replies: 8
- Views: 8876
Are you going to be there for Jazz Fest? Last weekend in April, first weekend in May. If not then just stay for it. It is the best time of year to be there. Unbelievable music and the food is overwhelming. Then if you can hang on till June you can go to the Glass Art Society conference. See the Rena...
- Mon Mar 22, 2004 7:43 pm
- Forum: Techniques and Tools
- Topic: Bouncing kiln floor
- Replies: 21
- Views: 24436
- Mon Mar 22, 2004 11:15 am
- Forum: Techniques and Tools
- Topic: First pot melt had "issues"
- Replies: 6
- Views: 7675
The powdery spot on the surface is where a bubble came through all the way from the bottom of the glass. When bubbles rise through the glass they pull stuff, usually glass, up from underneath. Notice that the other bubbles have colors from down below in their centers. I know that some people use pow...
- Mon Mar 22, 2004 10:57 am
- Forum: Techniques and Tools
- Topic: Bouncing kiln floor
- Replies: 21
- Views: 24436
Re: Bouncing kiln floor
I have recently noticed that most of my glass that is sand cast has some grits of sand sticking on the top surface. I'm not exactly sure just when they get on there. It could be when I lower the bell, although I was pretty careful last time and it seemed to be worse on both ends. Perhaps I knocked ...
- Mon Mar 22, 2004 10:46 am
- Forum: Techniques and Tools
- Topic: Bouncing kiln floor
- Replies: 21
- Views: 24436
hi charlie, what kind of steel grating? like expanded metal or some sort of welded strips on edge tm kind of thing ? would you have some sort of small i beam or angle iron support under the grating? i am in the verry beginning stages of designing my big kiln. rosanna I would use one of these, proba...
- Sun Mar 21, 2004 5:46 pm
- Forum: Techniques and Tools
- Topic: Bouncing kiln floor
- Replies: 21
- Views: 24436
Bouncing kiln floor
This came up not long ago when somebody complained about oddly bent glass. Now it has happened to me. I have always had two layers of IFB in my kiln floor. I recently took one layer out in order to get my kiln to cool down faster between firings. I've got a sand bed in it and want to reload it every...
- Sun Mar 21, 2004 5:11 pm
- Forum: Kiln Casting
- Topic: diamond angle grinders
- Replies: 9
- Views: 13073
Fordhams are toys next to Suhners. Richard Whiteley started pushing them several years ago. He likes the Rotafera.
http://www.suhnerusa.com/apt/flex/index.html
The rotary marks don't make any difference unless you are not going all the way to a polish.
ch
http://www.suhnerusa.com/apt/flex/index.html
The rotary marks don't make any difference unless you are not going all the way to a polish.
ch
- Sat Mar 20, 2004 8:06 pm
- Forum: Kiln Casting
- Topic: diamond angle grinders
- Replies: 9
- Views: 13073
I have a Flex and like it. Mine is heavy though since it is variable speed. You can get a heavy duty flexible shaft with an angle head and attach it to a regular old electric motor mounted on a bench, if you don't have to cover huge areas and really want a light weight tool. The Cadillac of flex sha...
- Sat Mar 20, 2004 7:58 pm
- Forum: Kiln Casting
- Topic: Mold Mixes information please!
- Replies: 4
- Views: 7054
I'm assuming though that not all plaster is created equal... what sort of plaster? and where would I get silica? And for my personal use, right now, I'd prefer something that's already mixed, where all I have to do is mix it with water... Something I can buy ready like that. Dental plaster is stron...