WarmGlass.com

I have a customer who just opened another store and in this particular store he's featuring a lot of "functional" glass of mine but he's also purchasing some beautiful glass vases with lots of holes in them from Poland.

One of these vases came into his store damaged and he gave it to me just to see what I might do with it.

Does anyone know what type of glass might be coming from Poland. It has a lot of clear glass with sort of splashes of color.

If I try melting it again would it be wise to anneal at temperatures from float down to Spectrum/BE?

If I could set up something huge it would probably make an interesting pot melt.

Judy

Hi Judy,
In Czech and Poland they make a lot of lead crystal,
but it may be soda lome as well.

Can you measure the specific weight.
Fill a bucket with water to the rim
Immerse the piece(s) into it. Some water flows over.
Lift the glass out, and measure how much water
is needed to refill.
That's how you get the volume.
Then divide the weigth by the volume
to get the specisific weight.
That is easy to calculate in metric system
If it is over 3 it is leaded,
under 2.5 it is soda lime.

That gives you a hint about the firing temperatures.
Leaded needs some 60 C less.
Anneal consevatively over a wide range.

-lauri

Thanks, Lauri,

At least that's a start.

There was an oval gold seal on the vase with the initials "I G D".

Judy