Patertiska

Hi David, not quote sure what you mean.
Are you referring to painting on glass, etching, sandblasting designs, casting?
Are you able to upload a photo so we understand what you are asking ?

Hi Striker10,
go to the following website where there are really good working notes to give the temps to fire to for a good strike:
https://www.warm-glass.co.uk/bullseye-sheet-glass-3mm-salmon-pink-opal-striker-030530-p-1011.html
Cheers & good luck