Yesterday I got an E from someone who bought a groundglass protector from me on Ebay, it was sent with some images showing that the wood had warped. This particular batch of protectors was made with a type of masonite-like material that had better veneer than the traditional plywood ones BUT seems to curl more.
If you purchased a groundglass protector from me(dagor77) and the protector is one of that type please check to make sure it isn't curling in as it may make contact with your groundglass. If it is just send me a Jpeg and I'll get a replacement out to you. It may have been a one off that has curled to the point of causing a problem but I'd rather not take the chance with anyones groundglass/fresnel etc.
All the best,
CP Goerz/dagor77.
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