I've heard of a method where you take 2 glasses of sheet and put the record in between where after you put the whole thing into the oven to heat up. Is there another way of flatening a record back to normal? Its weird only side 1 of my record wobbles a lot and side 2 is perfectly fine. Anyone can help???

I've heard of a method where you take 2 glasses of sheet and put the record in between where after you put the whole thing into the oven to heat up. Is there another way of flatening a record back to normal? Its weird only side 1 of my record wobbles a lot and side 2 is perfectly fine. Anyone can help???


I won't subject my Lp's to any glasses of sheet. :) :)


Mike

I have tried several methods including placing the record between two sheets of safety glass then clamping the glass together w/ spring loaded clamps. I have then placed the combo in the sun (didnt work) tried an oven for a few minutes at approx 150 degrees (ruined the record) and also just leaving the record/glass combo at room temperature for up to a week (still didnt work) If anyone has any other suggestions please let us know.

I've tried the easy method of using a hair dryer, warming up the record and placing a bath towl sheet over it with a book, worked a little bit but not that much.

I've always just used a good record clamp to flatten the offending disc on the TT platter. Granted, this won't fix severe edge warp.

Based on yield theory of materials I'd say to get them back in shape you must make them go pass the yield point and remove the residual stresses that cause the warping. The Tg of vinyl is from 50 to 70C while the melting T is 140 to 190C. If you go pass the melting T then you ruin the record like someone already did. I suggest you try clamping them in glass sheets and put them in 100 C oven for 15 minutes. If it doesn't work try adding every 10C at a time.

Using the heated glass method is too hit and miss, and frought with many variations on methodology, some put record between glass then heat, some heat glass first then put record between cooling glass.

Often minor warps can heal themselves by using good record storage.
Ie. Tight vertical packing with good support.

I've read about the oven method in fact do a search on Vinyl Asylum as I've seen it discussed there a time or to I have in the passed fixed a couple of 45"s by placing them on top of the older style portable TV’s worked like a charm of coarse 45's are much thinner and if I remember as that was many years ago I waited like 5 days and used lots of heavy books. I would be very interested in other ideas as I have a nice mono Sgt Pepper very early matrix numbers that has a pitch warp that I’d like to try and fix.

Stanton
:thmbsp:

From your description sounds like a record clamp would help with playback of ones that dont have ripples. It won't take the actual warp out. I'm not touching the warp fix suggestions. Just keep your eye out for another one.

...Its weird only side 1 of my record wobbles a lot and side 2 is perfectly fine...

I have trouble understanding how only ONE side of a record can be warped. Wouldn't the thickness of the pressing have to vary, for it to behave as described? Might it be some type of pressing error?

The problem here, is that not only does the LP warp, but the grooves themselves will warp. So, you may be able to get your platter to lie flat again, but in fact, there is NOT a way to get the grooves back to the way they were. You are S.O.L. my freind.