what kind of cement is used in glazing

[Merlin]

I usually buy my glazing materials (cement and liquid) from a local stained glass retail store. My question is: What kind of cement (topping, regular, etc...) is used in glazing compound? I'd like to buy some extra since I usually run out of the "cement" before I run out of the liquid used to mix with it. Also, what is the formulation for the liquid? It smells like terpentine.

[griffith]

There is no cement in cement  The dry powder is calcium carbonate (chalk). The liquid is turpentine and boiled linseed oil. There are many different recipies. If you use a lot, mixing your own is much more economical and has other advantages as well.

Some recipies do call for "portland cement", but you should not use it in your mix for numerous reasons.

[Small Beth]

Some recipies do call for "portland cement", but you should not use it in your mix for numerous reasons.

Could you tell me some of them? I've got a recipe that calls for it that I've thought about trying.

What recipe shouldI use instead?

Thanks,
B

[griffith]

My recipie is only one of many, and users usually favor their own, but here is mine:

Whiting
Equal parts (+/-) of boiled linseed oil and symthetic turpentine substitute, to desired consistancy.
Lamp black to desired color.
Only make as much as you will use within a day or two.

Some will add plaster of paris, but I am not sold on the reasoning behind it.
Portland Cement will stick to your glass like...concrete. If you, or anybody, ever has to repair the panel, or if you let it sit a bit too long without cleaning it up, it will be next to impossible to remove.

Paint suppliers should have or be able to get you whiting in 40# bags if you bug them long enough.

Elden

[Small Beth]

Thank you, Elden. Probably no one will ever want to repair the panels I make, but I'd rather do it right than wrong!