glass slumping mold formula
 

hi,
I want to make a particular glass lens for a car, i need to make a mold
from a refractory plaster/ ceramic, then slump the glass into the mold .
please help. does anyone have a formula for cerating glass slumping molds?
thanx

"A.Rahim Sheikh" wrote in message
...
hi,
I want to make a particular glass lens for a car, i need to make a mold
from a refractory plaster/ ceramic, then slump the glass into the mold .
please help. does anyone have a formula for cerating glass slumping molds?
thanx

where is ... global.co.za

"Javahut" wrote in message
...

"A.Rahim Sheikh" wrote in message
...
hi,
I want to make a particular glass lens for a car, i need to make a mold
from a refractory plaster/ ceramic, then slump the glass into the mold .
please help. does anyone have a formula for cerating glass slumping
molds?
thanx

where is ... global.co.za


zambia? zanzibar?

Republic of South Africa

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White House will be adorned by a downright moron." --H.L. Mencken (1880 -
1956)
"Moonraker" wrote in message
. ..

"Javahut" wrote in message
...

"A.Rahim Sheikh" wrote in message
...
hi,
I want to make a particular glass lens for a car, i need to make a
mold
from a refractory plaster/ ceramic, then slump the glass into the mold
.
please help. does anyone have a formula for cerating glass slumping
molds?
thanx

where is ... global.co.za


zambia? zanzibar?

The raditional glass casting formula is 50% plaster and 50% silica flour.
Depending on the shape of the mold and the temperature taken to it is
possible to get more than one use from this kind of mold.
If you are trying to make the shape of the back as well as the overall
shape, life is a lot trickier.
In annealing the glass, you have to take into account the thickness of the
mold.

--
Mike Firth
Hot Glass Bits Furnace Working Website
http://users.ticnet.com/mikefirth/hotbit47.htm Latest notes

"A.Rahim Sheikh" wrote in message
...
hi,
I want to make a particular glass lens for a car, i need to make a mold
from a refractory plaster/ ceramic, then slump the glass into the mold .
please help. does anyone have a formula for cerating glass slumping molds?
thanx

Do you want to slump or kiln cast? If you want to only slump you can use a
bisque fired ceramic. If you wish to kiln cast you should try 1part
plaster/1 part silica (200 mesh) If your going to kiln cast multiples there
is a product called Castalot, available from Olympic Color Rods,
http://www.glasscolor.com This product can be used for both slumping and
kiln casting.

hi,
I want to make a particular glass lens for a car, i need to make a mold
from a refractory plaster/ ceramic, then slump the glass into the mold .
please help. does anyone have a formula for creating glass slumping molds?
thanx
A. Rahim Sheikh

On Wed, 23 Mar 2005 18:02:01 -0500, Javahut wrote:

where is ... global.co.za

For future reference:
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