So I was just curious why you stipulate that the mat needs to be glued to the platter.
@lewm That is specifically in the case of the Oracle mat which is designed to be used in that manner.
I have a mat at home that is the same kind that SOTA used on their early Cosmos turntables; it was sold as an item by itself prior to SOTA acquiring the rights to it. It does not have to be glued down.