Glass Tips from Verrier

Why is the stress not relieved after the strain point when slumping? The answer relates to whether it is on the cool or on the heat up. Co...

From time to time the assertion is that a break during the heat up of a blank while slumping is the result of residual stress remaining in a...

  Annealing Includes Cooling Often people recommend a long anneal soak for potentially difficult pieces followed by an arbitrary 55C/100F c...

Example used with the maker’s permission Piece in kiln ready to fire Description of the piece. A commissioned piece made up of B...

There are writings from a teacher attempting to make glass fusing simple.   Unfortunately, glass physics and chemistry are very complicate...

An stress test strip and annealing witness between polarised filters. If an unbroken fired piece shows stress that is known not to be from ...

  Shotgun annealing is chosen when the annealing temperature is unknown or uncertain. The name comes from the characteristic spread of the ...

Testing for stress is one of the most important elements in kilnforming.  It may not look like there is stress when there is considerable am...