Arnold Howard on wed 6 mar 02
We have a small jewelry kiln with a 2" x 2" glass view port. The
maximum temperature for the glass port is 1700 deg. F.
Arnold Howard
Paragon
--- BVCuma wrote:
> >>2) I'm still looking into the "window in a kiln" thing. I have
> a piece of
> hi-temp glass to test and am looking at some other hi-temp
> glasses that
> offer better performance at a higher price. GE 214 fused quartz
> appears to
> be the most promising. The ultimate is sapphire - good to 1700
> °C. I'm not
> quite ready to finance that one.<<
> ___________________________
>
> Bruce ; )
> I designed on my kiln a looking glass...
> I have come to depend on it.
> I like the visual observation
> and protection from the flame.
> At low temperatures in darkness
> I can close the primary air supply
> and get a bright yellow flame
> that indicates how the place settings are (cones etc)
> and gives me an idea of the flame path.
> Though it broke on cleaning the other day (cracked up)
> I guess it lost its temper as it was rated for only 1000 c.
> The door is a good eight inches in depth
> so I figured it was cool enough back there
> Another problem is clouding of the view
> by a film of soot produced while reducing heavily.
> So I now will devise a metal insert to reduce heat and soot.
> That I can slide up and down between the glass/flame
> When a visual is desired...
> with out the danger of a blow back.
>
> Good luck with your various "projects"
> Bruce
>
>
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BVCuma on wed 6 mar 02
>>2) I'm still looking into the "window in a kiln" thing. I have a piece =
of
hi-temp glass to test and am looking at some other hi-temp glasses that
offer better performance at a higher price. GE 214 fused quartz appears =
to
be the most promising. The ultimate is sapphire - good to 1700 =B0C. I'm =
not
quite ready to finance that one.<<
___________________________
Bruce ; )
I designed on my kiln a looking glass...
I have come to depend on it.
I like the visual observation
and protection from the flame.
At low temperatures in darkness
I can close the primary air supply
and get a bright yellow flame
that indicates how the place settings are (cones etc)
and gives me an idea of the flame path.
Though it broke on cleaning the other day (cracked up)
I guess it lost its temper as it was rated for only 1000 c.
The door is a good eight inches in depth
so I figured it was cool enough back there
Another problem is clouding of the view
by a film of soot produced while reducing heavily.
So I now will devise a metal insert to reduce heat and soot.
That I can slide up and down between the glass/flame
When a visual is desired...
with out the danger of a blow back.
Good luck with your various "projects"
Bruce
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