Glass Tips from Verrier

A frequently asked question is “how many times can I re-fire my piece?” This is difficult to answer as it relates to the kind of glass a...

    This graph illustrates the effect of a rapid increase (500C/hr) in temperature on the glass.   The blue line represents the air temp...

Creating samples or tests provides both references on firing profiles and knowledge of the characteristics of the kiln.   General samples ...

Dennis Brady has done a lot of work on predicting the size of circles resulting from stacking squares of glass and taking them to full fuse ...

Hake (ha-kay) brushes are made from goat's hair. Their advantage over other brushes for applying kiln wash is that they hold a lot of ...

Kiln wash is applied thinly in a 1:5 powder to water mix to shelves and moulds.   The object is to get a complete coverage with a smooth s...

NOTE: completely revised 31 December 2021 After  Bullseye published annealing tables for thick slabs, s ome people feel they need to use th...

So much is said about the toxicity of zinc, I thought to look up some facts. As there is significant concern about health issues, it is us...

When quoting on a fused glass commission, what are all the factors to consider? Commission for Glasgow University Quote the same way a...

A critical range is the temperature around the annealing point. The upper and lower limits of this range are known as the softening and str...

A question arose: If you fuse a single 20cm diameter sheet of 3mm glass to full fuse, [with a decorative rim] what happens? … Would the...

Question: I had 2 kiln loads where every piece had huge bubbles. The 3rd time I did a test fire and put 2 pieces on Thinfire and one o...