New 'Vinyl Flat' flattener?

48 hours in the pouch? Do you notice any sonic changes after that long. I may try that on my Mofi Slowhand that just doesn't want to comply.

Rarely has the Vinyl Flat not at least improved a warp for me. In many cases, it eliminates them. I have no experience with 45s but I would assume a properly sized groovy ring would optimize results.

My interest was peaked by this thread so I ordered the Vinyl Flat and pouch and have been experimenting with it. I was skeptical. I've tried several methods of flattening discs without success. Short answer? This works. I think the key is even pressure and controlled heat. The fact that these groovy rings avoid the label step up as well as the one at the outer rim is very important. Even pressure is applied to the playing surface only. I also like the pouch because it take the guess work out of heat application. The records I've tried have come out much more playable with no noted change in sound quality. The one thing I would say based on my experience is to error on the long side with heating times. The first record I tried really didn't improve on a 3.5 hour trial. I retried it and went way to a party all night. I forgot about it and came home and went to bed. After 11 hours in the heated pouch I thought all may be lost. The record was nearly perfectly flat after cooling and sounded the same as before. Currently, I'm going 6-7 hours. Let it cool to room temp before opening. To me, the Furotech is way too expensive. This system is safe, effective and affordable. That passes FDA standards. I don't know how much weight my opinion carries on these forums(I'm no Doug Deacon I know that)but I give this thing my recommendation. If you have a large collection you have enough warped vinyl to make this product well worth the price.

Swampwalker,
That's what I'm saying. It does just that and it's the first time I've had any success at all doing something like this. I made a copy of Al Di Meola's Hotel Splendido that had severe ripple warps play with very little tonearm movement at all and this record sounds great, still. At this price, I wouldn't hesitate to recommend trying this to anyone. If you have a group of friends to share one with even better. Currently, I'm flattening the Legacy 50th anniversary pressing of Kind of Blue. This set was fairly well done but horribly packaged. I found one for $30 but with a dish warp. I'm optimistic. We'll see.

The Legacy 50th Anniversary Kind of Blue on blue 180gm vinyl which was dish warped with a nasty bump up on the outer edge came out of the pouch after 6 hours almost perfectly flat and sounds great. My 312s Magnesium would track this before but I didn't like what it may be doing to the cartridge suspension. So, another impressive success and still no untoward side effects or failures. I'm definitely sold. Of course, I'd prefer to just have a flat disc from the start but this should help salvage almost anything that's not.

I may have finally come across an LP that can't be helped. I have a copy of Mofi's Slowhand that has bad dish warping. I've kept it because side two plays flat, especially with a clamp on the record. Side one is dished up and undulated all over the place. Even if my stylus will track this I don't like to subject it to that obstacle course. A four hour run in the pouch didn't change anything(all I had time for). Maybe Mofi vinyl is different somehow. Anyway, I'm going to try an ultra long run all day while I'm at work. Really nothing to lose here and I'd like this LP if it were flat. We'll see.

Well, it was about 11 hours in the pouch. To my surprise this LP is unchanged. This is in stark contrast to every other LP I've tried thus far. Obviously vinyl from different sources may vary in chemical composition. Anyone else tried this on an older Mofi? Maybe they're more refractory to intervention. It certainly is no worse than before with the same beautiful sheen. If worse comes to worse I can just keep this one for side two.
At any rate, the risk involved in experimenting with this thing seems to be quite small. I do think I'll try the oven trick suggested by Miner42 but I'll need to pick up a couple thermometers first to make sure the temperature in my oven is accurate.

I have now tried the oven at a confirmed 150 degrees and still no change in this Mofi disc from the 70's. I think I'll stop on this one after three cycle for fear of destroying the one playable side. The vinyl flat obviously can't fix everything but I've had enough success already that I'm more than sold. I think I may draw the line at two runs. If twice doesn't do it I'll stop unless I really just don't care what happens. This make 5 successes to one failure. Not too bad considering a zero success rate with other methods.

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?

I agree on the pouch time. Seems pretty unlikely that a record could "over cook" in this thing. I have found some records that aren't fixed by it but the ones that are more than make up for that.

In answer to the heavier vinyl question, my experience has been that the Vinyl Flat is more effective on heavier vinyl for whatever reason. The 180 gm and 200 gm discs have come out the flattest for me.