What causes "crazing" on a glazed finish??

Question

What causes "crazing" on a glazed finish??

Answer 1

It can be when the glaze gets old and therefore hard and brittle and will no longer expand and contract with the substrate.  On new glaze it can be a sign of incompatibilty with the substrate.

Answer 2

I am sorry, i tried looking up your answer on various websites and even posted the Question on a site much similar to this but have had no response. if i do in future. i will let you know. for now sorry. try going to wiki though