Bigrod,
From what I see you're trying to flatten 7" 45s with the vinyl flat, right? I don't know that they make a 7" groovy ring. If they do, I haven't seen it. If you're using the 12" ring on a 45 I'm not surprised you're befuddled because you've missed the point entirely somehow. You may as well be using two sheets of glass in the oven or whatever. That doesn't work at all, I've tried it. IMO the reason the Vinyl Flat DOES work is that the groovy rings contact the playing surface intimately. The outer lip of an LP is raised as is the label. This leaves plenty of play for the LP to stay warped or warp in different places between two sheets of glass or anything else in an oven. Contact the maker and ask if they can produce a ring for 7" 45s. I have used this device and it is the ONLY thing I've ever tried that actually does work. No affect on sonics that I can tell what so ever. IMO the heating times for the pouch are way on the conservative side and in no way would I ever try to flatten a 45 without a custom sized ring. This is not that hard to understand. Why has no one explained this to Bigrod yet?
From what I see you're trying to flatten 7" 45s with the vinyl flat, right? I don't know that they make a 7" groovy ring. If they do, I haven't seen it. If you're using the 12" ring on a 45 I'm not surprised you're befuddled because you've missed the point entirely somehow. You may as well be using two sheets of glass in the oven or whatever. That doesn't work at all, I've tried it. IMO the reason the Vinyl Flat DOES work is that the groovy rings contact the playing surface intimately. The outer lip of an LP is raised as is the label. This leaves plenty of play for the LP to stay warped or warp in different places between two sheets of glass or anything else in an oven. Contact the maker and ask if they can produce a ring for 7" 45s. I have used this device and it is the ONLY thing I've ever tried that actually does work. No affect on sonics that I can tell what so ever. IMO the heating times for the pouch are way on the conservative side and in no way would I ever try to flatten a 45 without a custom sized ring. This is not that hard to understand. Why has no one explained this to Bigrod yet?