If only there was someone here with access to lathes and stuff. Think of the money they could earn in their lunchtime (after consuming their nutritious nuked packet rice) turning up bits of experimental hifi foo.
Had one, traded it with a mate. There are many different types of warp it works for some not others. There are many different types of vinyl - It works for some better than others. (There is a list somewhere about ‘cooking times’ for different record labels) The heat is applied to the run in and run out grooves so serious kinks / dishing / warps will not fare well - Mixed results, lots of practice