A heat question

A heat question

Post by planetwalde » Thu, 09 Oct 1997 04:00:00



I am planning to build a fireplace screen out of art glass.  Can I use
regular Spectrum glass or is there a high temperature version I should
use?

I am just worried about the effect of the fireplace heat on the
panels.

Thanks,

Chuck

 
 
 

A heat question

Post by Sam Gaylo » Thu, 09 Oct 1997 04:00:00


: I am planning to build a fireplace screen out of art glass.  Can I use
: regular Spectrum glass or is there a high temperature version I should
: use?

: I am just worried about the effect of the fireplace heat on the
: panels.

I'd be worried too.  I think glass fireplace screens are made of tempered
glass like pyrex, and you can't cut that.

samg


Hewlett Packard/Colorado Springs

 
 
 

A heat question

Post by Douglas R. Ter » Thu, 09 Oct 1997 04:00:00


Quote:
>: I am planning to build a fireplace screen out of art glass.  Can I
use
>: regular Spectrum glass or is there a high temperature version I
should
>: use?

>: I am just worried about the effect of the fireplace heat on the
>: panels.

>I'd be worried too.  I think glass fireplace screens are made of
tempered
>glass like pyrex, and you can't cut that.
>samg

sorry to but in but temperd glass is not like pyrex
pyrex is a glass of low coe. aprox 35 therefor it does not change size
much when heated so can stand being hot in one spot and cold in a
nother.
tempered glass is glass that has been quick cooled in such a way to
causes a stress in the glass that makes it stronger from one area
pulling on another. so if youse this get one that is temoerd for heat.
and thats right tempered glass can not be cut, not even with a laser,
it just shaters
 
 
 

A heat question

Post by H. Rubin. » Thu, 09 Oct 1997 04:00:00


Glass melts to a taffy like consistancy around 2,000...if you get the air
and hearth up to that temperature...the fireplace screen is the LEAST of
your worries.

Solder melts high enough (500 or so) to not be effected by the air heated
by the fireplace either.

GO FOR IT, and as a sugeston use some ripple or textured type glasses that
will pick up the movement of the fire and lean toward the cathedral or
wispy type glass as well. Heavy opals will reflect light, but may show
real well when being iluminated by the fire.

 
 
 

A heat question

Post by Mark Wils » Fri, 10 Oct 1997 04:00:00



Quote:

>I am planning to build a fireplace screen out of art glass.  Can I use
>regular Spectrum glass or is there a high temperature version I should
>use?

>I am just worried about the effect of the fireplace heat on the
>panels.

IMO, I think that you need to use Pyrex and that all soft glasses will fracture.
 
 
 

A heat question

Post by InBox Overflowi » Mon, 13 Oct 1997 04:00:00


Hmm.
I thought this would be neat too, but was hoping to find a fireplace
screen frame that would accept a piece of glass easily.  Thought it
would be easier to find.



Quote:
>On Wed, 08 Oct 1997 00:28:40 GMT,

>>I am planning to build a fireplace screen out of art glass. <<snip>>
>>I am just worried about the effect of the fireplace heat on the
>>panels.
>I have onle seen one of these and I think it was Spectrum or Wissmach.
>My concern would be about liability.  Let one kid run into it....

I recall seeing one of these on a how-to stained glass show on TV
within the last year.  It may have been Vicki Payne, but not sure.  It
was some kind of forest scene.  I think they were showing how to use
reinforcement (flat coil of copper within copper foil seam).  Not sure
only half watching.  Thought it was taping (nope).  It seems that it
was more of a decorative screen (set back away from fireplace) to hide
the fireplace which had the real screen up close, though I could be
wrong.

Looked around antique stores this last spring and summer.
Interestingly enough, not many.  There was one place that had a nice
wood-framed  deal with inserts in the front which could be changed.  I
thought it looked too tippy to try that with glass.  I figured that
I'd have to modify the base with a double-cantilever type of thing
(flat bars to keep it from tipping).  I'm still thinking on this one.
There was another screen I saw with three hinged panels, one large
center panel with a small panel on either side.  Again, I wouldn't be
comfortable with it's stability without some anti-tip support.

Since I'm the one who'd be cleaning it, I'd probably want to sandwich
the s.g.panel between two sheets of glass.  Now that the liability
issue (and safety of kids comes up) I think I'd like to check into the
feasibility of using tempered glass to sandwich it between (yes, I
know I can't cut it, but it's not that costly to have it made).

Set back from the fireplace as decorative screen I think would be
great, and heat shouldn't be a real issue (especially if there is a
glass screen there already.    It would be a nice experiment to put a
digital thermometer at whatever distance from the fireplace to see
what the temperature gets up to.

Good Luck.  Let us know if you do this.  I'd be interested in knowing
how it turns out.
__________
 Sorry, InBox Overflowing Already
 Reply to NG

 
 
 

A heat question

Post by vitre.. » Mon, 13 Oct 1997 04:00:00


Quote:

> I am planning to build a fireplace screen out of art glass.  Can I use
> regular Spectrum glass or is there a high temperature version I should
> use?

> I am just worried about the effect of the fireplace heat on the
> panels.

> Thanks,

> Chuck

Im a glassblower and deal with alot of hot glass.  Most likely you can
do what you want without a problem.  The main concern with glass is that
if it heats unevenly, it will crack.  But using stained glass supplies,
the glass will be very thin (relatively), and even in thickness.  That
reduces the chance of uneven heating.  Also, a fire takes awhile to
really get hot, giving the glass a chance to heat slowly and evenly.  I
would say it would be fine to do.