The link is good. Try 14x14 1/4 inch tempered glass and a clean record. Heat the oven to just warm (150F or so) and put in the sandwich. Turn off the oven and let it cool.
You can correct for slight warps of the slowly undulating kind but very sharp bumps don't do so well. Even if they flatten out the grooves are distorted.
For the price of the glass it is worth experimenting with.
You can correct for slight warps of the slowly undulating kind but very sharp bumps don't do so well. Even if they flatten out the grooves are distorted.
For the price of the glass it is worth experimenting with.