Glass Tips from Verrier

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...

Will stress still show with polarised filters on cracked and broken glass? It's not a straightforward answer. I was looking at some ...

Initial Rate of Advance Tack fuses look easier than full fusing, but they are really one of the most difficult types of kiln forming. Tack...

  This is a description of the analysis process to determine the possible causes of a split during a slump.       Credit: Maureen Nolan Ob...

There is a view that there will be less stress in the glass after a full fuse than a tack fuse firing. This view may have its origin ...

At a time when we are all going to be trying a variety of glass of unknown compositions to reduce costs of kiln working, the knowledge of h...

Diagnosis of breaks during slumping processes is often difficult because the temperature is not high enough to be able to apply the usual ...

  The cracks around the wire imbedded in the glass in the above image are not incompatibility cracks. They do not surround the square piec...

" I have seen recommendations for slower than ASAP rates from the top temperature, but most schedules say 9999 or ASAP.  Which is right...