kiln

i have got a big kiln and want to know if i have to use cones for glass
slumping? we are new at this and need to find the temp,s to. Thanks Gail

wrote:
i have got a big kiln and want to know if i have to use cones for glass
slumping? we are new at this and need to find the temp,s to. Thanks Gail


You won't be using the cones any more.

Go to www.warmglass.com and read the tutorial.

Jack

On Wed, 11 May 2005 20:54:55 -0600, nJb wrote:
wrote:
i have got a big kiln and want to know if i have to use cones for glass
slumping? we are new at this and need to find the temp,s to. Thanks Gail


You won't be using the cones any more.

Go to www.warmglass.com and read the tutorial.

While that's good advice, it's not as though it's not possible to use
cones, especially for something (relatively) simple like slumping a
single layer of glass. I've successfully slumped by putting an 018 cone
in the kilnsitter, turning the power on high, and walking away. There's
enough thermal mass in the kiln, and the glass is thin enough, that it
seems to cool down slowly enough to anneal reasonably well.

On the other hand, I only did the one project before I built a digital
controller for the beast (setpoint only, for the moment, but for now
that's enough.)

--
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbt 1}hollow interior{media{emission T}}finish{
reflection.1}}#end Z(-x-x.2y)Z(-x-x.4x)camera{location z*-10rotate x*90}

Ron Parker wrote:
On Wed, 11 May 2005 20:54:55 -0600, nJb wrote:

wrote:

i have got a big kiln and want to know if i have to use cones for glass
slumping? we are new at this and need to find the temp,s to. Thanks Gail


You won't be using the cones any more.

Go to www.warmglass.com and read the tutorial.


While that's good advice, it's not as though it's not possible to use
cones, especially for something (relatively) simple like slumping a
single layer of glass. I've successfully slumped by putting an 018 cone
in the kilnsitter, turning the power on high, and walking away. There's
enough thermal mass in the kiln, and the glass is thin enough, that it
seems to cool down slowly enough to anneal reasonably well.

On the other hand, I only did the one project before I built a digital
controller for the beast (setpoint only, for the moment, but for now
that's enough.)


I second what these guys said; you *can* use cones but you probably
won't want to. An analog pyrometer and infinite control switch are
inexpensive and can be effectively used to manually control your
temperatures, but you'll be much happier with a digital controller,
which you can build yourself as Ron did or purchase from a supplier such
as www.cdvkiln.com. A basic fusing book like "Contemporary Warm Glass"
by Brad Walker is another great place to start.

Good luck!

--
-Kalera
http://www.beadwife.com