NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
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Post by NRG on Jul 11, 2018 23:38:28 GMT -5
Those points are so nice, you gonna need another saw or three. The glass doesnt weld to the stainless? More kilns Scott. They are the bottleneck. Well them and the glass prepper. Tired. 3 pick up truck loads of glass. To keep molten glass from sticking you must line mold with ceramic fiber paper. I have experimented with a layer of clay slip for a similar experiment. No wrinkles from paper. No slipping, no gaps. It worked. I would use your white clay, not the red stuff as a test if I lived on your frog farm. Dang you must have a ton of frogs! |
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jamesp
Cave Dweller 
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 12, 2018 4:31:08 GMT -5
You want some slabs Lee ? When you're ready to sell some I'd like to give it a try. I'm not even close to the caliber of the guys you're having test it out, but it sure looks like something I'd like to try. Well I am trying to make trickier 6+ inch slabs for those guys since a lot of their points are long. If you are new to napping you may want to try shorter/narrower slabs. I will probably mail out tomorrow. I have some shorter stuff you can practice on. PM address and I'll send you a few samples in 3 inch range. 2 inch wide slabs really for the pros, long way to fire a chip across. I'd start 1 to 1.25" wide. |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 12, 2018 4:40:35 GMT -5
More kilns Scott. They are the bottleneck. Well them and the glass prepper. Tired. 3 pick up truck loads of glass. To keep molten glass from sticking you must line mold with ceramic fiber paper. I have experimented with a layer of clay slip for a similar experiment. No wrinkles from paper. No slipping, no gaps. It worked. I would use your white clay, not the red stuff as a test if I lived on your frog farm. Dang you must have a ton of frogs! Warm weather nights there is noise pollution. Need to take a decimal reading at night or before a thunderstorm when the frogs get cranked up. The paper is more expensive but faster and never sticks. Sometimes the clay kiln wash sticks to the glass and to the molds. You have to let the kiln wash dry too. Paper is easier so that is the route. The external surface of the brick is long gone after most products are cut out of the brick so the surface not an issue. Some want to buy the whole brick but that would take the fun out of sawing it and seeing the within. Finished picking up all the small glass yesterday. ~300 sheets 20"x16"x2mm at 800 pounds in 41 colors 372 1KG bottles of frit powder/fine/medium/coarse broad color range(wholesale cost 2009 was $8500) 300 pound crate of broken plates All that is left is 9 crates with 59 - 32"x29"x3mm plates each in 41 colors Est. weight is 6300 pounds. One trailer load using old 7000 pound trailer. Having to clean out nursery stuff in barn to get glass arranged in it. |
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Post by 1dave on Jul 12, 2018 6:08:38 GMT -5
"have glass - will keep me happy down on the farm."  |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 12, 2018 8:12:02 GMT -5
"have glass - will keep me happy down on the farm." I'll have fun going to nap-ins too Dave. rock hunting with them too, lots of coastal plain South GA,AL, Miss, Louisiana boys. Getting the packaging ritual figured  |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 12, 2018 9:03:26 GMT -5
End of brick half, thinking obelisk. Bricks have multiple side personality   |
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Post by MsAli on Jul 12, 2018 9:09:18 GMT -5
Wonder how one of those would look as a sphere
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Post by hummingbirdstones on Jul 12, 2018 10:17:51 GMT -5
Wonder how one of those would look as a sphere It would look way cool, except I think it'd probably be more like a marble. |
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Post by MsAli on Jul 12, 2018 10:22:06 GMT -5
Wonder how one of those would look as a sphere It would look way cool, except I think it'd probably be more like a marble. Thats what I was thinking. May be better with some pastels and not as "busy" |
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Post by aDave on Jul 12, 2018 10:33:35 GMT -5
Wonder how one of those would look as a sphere Round.  Sorry, I couldn't resist. |
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Post by MsAli on Jul 12, 2018 10:35:36 GMT -5
Wonder how one of those would look as a sphere Round.  Sorry, I couldn't resist.  |
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Post by fernwood on Jul 12, 2018 10:46:49 GMT -5
A marble on steroids.
Like the versatility of the bricks. Decisions, decisions to be made before slabbing.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 13, 2018 4:05:40 GMT -5
NRG Can glass be shaped in a sphere machine ? These were a pain to make yesterday, stainless forms with one corner open so they can be removed. I took them to the town kitchen fabrication shop and the let me put the metal on a brake and bend them. They are 9x6 and 6x6 inch brick molds about 5 inches tall. Maximizing 21 inch round kiln shelf. The 5 inch height allows stacking glass enough to make cool flow patterns for 1.5 to 2 inch bricks for spearheads. A 4x4 inch sphere mold would best be 10 to 12 inches tall to get similar mixing for a 4x4x4 brick for a sphere. If the sphere machine could get the 4x4x4 to round it could be flame polished in a kiln. I could give it a go. Best done in a deeper kiln. You could do a whole bunch of them at one time i.e. kiln full. I'm stupid, the best form would be a 4 inch pipe split down one side for removal. Cylinder easier to make a sphere I think. Let me know, I prefer to make you a 3 inch sphere for starts. 4x4 if 3x3 casts well. Used 309S rods in open air, welded easily and pretty welds. Can saw 4 brick slabs at a time on rock saw. 
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 13, 2018 4:09:51 GMT -5
Round. Sorry, I couldn't resist. , I wonder if Allison is blonde ? |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 13, 2018 4:53:30 GMT -5
Just started sawing the other half of this big melt brick. This side busier due to direction of collapse. Busy good for the boys making spearheads. But note large bubble that formed and rose to the top of brick pulling color up with it.  This slab from lower half of this brick and sawn parallel to Bic lighter and about 3 inches to the left of the lighter where large bubble is. You can match it up if you look at the top colors on the brick and slab. This brick good for 40 spearhead slabs. Using stainless molds about 100 slabs per cook.  |
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Post by fernwood on Jul 13, 2018 5:49:40 GMT -5
The patterns in the slice are very interesting.
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Post by MsAli on Jul 13, 2018 7:12:55 GMT -5
aDave , I wonder if Allison is blonde ? You betcha |
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Post by HankRocks on Jul 13, 2018 8:18:58 GMT -5
NRG Can glass be shaped in a sphere machine ? These were a pain to make yesterday, stainless forms with one corner open so they can be removed. I took them to the town kitchen fabrication shop and the let me put the metal on a brake and bend them. They are 9x6 and 6x6 inch brick molds about 5 inches tall. Maximizing 21 inch round kiln shelf. The 5 inch height allows stacking glass enough to make cool flow patterns for 1.5 to 2 inch bricks for spearheads. A 4x4 inch sphere mold would best be 10 to 12 inches tall to get similar mixing for a 4x4x4 brick for a sphere. If the sphere machine could get the 4x4x4 to round it could be flame polished in a kiln. I could give it a go. Best done in a deeper kiln. You could do a whole bunch of them at one time i.e. kiln full. I'm stupid, the best form would be a 4 inch pipe split down one side for removal. Cylinder easier to make a sphere I think. Let me know, I prefer to make you a 3 inch sphere for starts. 4x4 if 3x3 casts well. Used 309S rods in open air, welded easily and pretty welds. Can saw 4 brick slabs at a time on rock saw. Just curious and I am not sure how you would build the mold, or fill it for proper melting, but would it be better to have a mold that had more sides that did not require as much pre-cutting and shaping before going to the sphere machine. I can see where a taller mold would be better for the melting and mixing so not sure how a non-square mold would even work. (just thinking out loud) |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 13, 2018 8:19:04 GMT -5
Life is difficult having to look at what these guys make out of your stuff. Guessing you guys will get tired of me posting spearheads.   |
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,612
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Post by jamesp on Jul 13, 2018 8:24:43 GMT -5
NRG Can glass be shaped in a sphere machine ? These were a pain to make yesterday, stainless forms with one corner open so they can be removed. I took them to the town kitchen fabrication shop and the let me put the metal on a brake and bend them. They are 9x6 and 6x6 inch brick molds about 5 inches tall. Maximizing 21 inch round kiln shelf. The 5 inch height allows stacking glass enough to make cool flow patterns for 1.5 to 2 inch bricks for spearheads. A 4x4 inch sphere mold would best be 10 to 12 inches tall to get similar mixing for a 4x4x4 brick for a sphere. If the sphere machine could get the 4x4x4 to round it could be flame polished in a kiln. I could give it a go. Best done in a deeper kiln. You could do a whole bunch of them at one time i.e. kiln full. I'm stupid, the best form would be a 4 inch pipe split down one side for removal. Cylinder easier to make a sphere I think. Let me know, I prefer to make you a 3 inch sphere for starts. 4x4 if 3x3 casts well. Used 309S rods in open air, welded easily and pretty welds. Can saw 4 brick slabs at a time on rock saw. Just curious and I am not sure how you would build the mold, or fill it for proper melting, but would it be better to have a mold that had more sides that did not require as much pre-cutting and shaping before going to the sphere machine. I can see where a taller mold would be better for the melting and mixing so not sure how a non-square mold would even work. (just thinking out loud) Those are square/rectangular brick molds for cutting slabs Henry. A sphere mold would at least be a pipe and at best a pipe with a round bottom so that you would only have to shape the top to a sphere shape. You might be able to pipe glass out of a bowl and fill a complete spherical shaped mold but I think you would trap bubbles in the top half. Lack of free vent... |
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