[orientalexpress]

will oven work?Thanks



lapsan

[Photon46]

I'd suggest you check the discussion archives over at Audiogon.com and use "warped" as your search topic. There have been many, many, useful threads there giving all sorts of advice. The short answer to your question is: usually, warps can be helped, if not not corrected by proper use of heat and weight. An oven that is properly temperature calibrated will work.

[orientalexpress]

sweet,Thanks you

[TheChairGuy]

An outer periphery ring and inner record weight or clamp in conjunction with an adequate tracking cartridge should alleviate matters more safely than re-heating your black pizza

I wouldn't try to iron my records.  I'd either return them to place of purchase (if new especially as so many of the new releases have warp issues I've found) or press them neatly with an outer periphery ring and inner clamp or weight.

Here's a guy on ebay offering lotsa' interesting stuff: http://shop.ebay.com/merchant/ldenham123_W0QQ_nkwZQQ_armrsZ1QQ_fromZ

Note - any record should benefit from clamping inner and outer edges...not just plainly warped ones.

John

[ricmon]

An outer periphery ring and inner record weight or clamp in conjunction with an adequate tracking cartridge should alleviate matters more safely than re-heating your black pizza

I wouldn't try to iron my records.  I'd either return them to place of purchase (if new especially as so many of the new releases have warp issues I've found) or press them neatly with an outer periphery ring and inner clamp or weight.

Here's a guy on ebay offering lotsa' interesting stuff: http://shop.ebay.com/merchant/ldenham123_W0QQ_nkwZQQ_armrsZ1QQ_fromZ

Note - any record should benefit from clamping inner and outer edges...not just plainly warped ones.

John

One question about outer rings.  Does weight matter? 

[Wayner]

I have 2 heavy plates of glass. I tried once to put an LP sandwich in the oven at about 150 degrees, sht it off and let the oven cool down with the album in the glass sandwich. It flattened it out, but the temp was too much.

When I have another candidate, I will try 125 degrees (F) and see how that works. This process is called tempering and is done with metal castings all the time. The trick is a controlled temperature and a slow cool rate to take the stresses out of the poor warped LP.

Furutech has a flattener for About 2K if you really want one. Or perhaps a group buy?

Wayner

[orientalexpress]

how about convert one of those George Forman grill  ,we're have engineer here .

[TheChairGuy]

One question about outer rings.  Does weight matter? 

Prolly Ric.

If the speed is regulated (servo direct drive or another method with belt drive tables) it'll keep 33 1/3...otherwise it'll be off.

When I used my periphery ring on my HW-19 Mk. III (now owned by orthobiz/Paul), the speed was slow by 1% (it was slow by about 1/2% without the ring)

But by hooking up the SDS (outboard speed control), it was brought back to 'perfect' (theoretical at least ) speed again.

John

[TheChairGuy]

Furutech has a flattener for About 2K if you really want one. Or perhaps a group buy?

Wayner

A vinylphool friend bought one - and it did not at all work.

It's a $2K clusterpluck

John

[richidoo]

Step 1. Put it in the middle of a stack of records packed tightly in a milk crate, haul them around in the back of a hatchback for about 6 months. At the end of it the warped ones will be flat (but the flat ones will be warped.)
Step 2. Do not repeat. 

[ricmon]

One question about outer rings.  Does weight matter? 

Prolly Ric.

If the speed is regulated (servo direct drive or another method with belt drive tables) it'll keep 33 1/3...otherwise it'll be off.

When I used my periphery ring on my HW-19 Mk. III (now owned by orthobiz/Paul), the speed was slow by 1% (it was slow by about 1/2% without the ring)

But by hooking up the SDS (outboard speed control), it was brought back to 'perfect' (theoretical at least ) speed again.

John

John, sorry if wasn't clear. I want to know is does a heavier outering works better than on that is lighter.  I ask because following the link you provided the seller has 2 types the difference being weight.

Ric

[TheChairGuy]

John, sorry if wasn't clear. I want to know is does a heavier outering works better than on that is lighter.  I ask because following the link you provided the seller has 2 types the difference being weight.

Ric,

It depends on your deck and motor.

If you have a suspended deck...the lighter is the one.  If you have a pretty hi torque motor connected to belt drive or an direct/idler drive deck, the heavier will be your ticket.

Without outboard speed control, you do run the risk of running your deck too slow with any combination, however. Appreciably slower than 33 1/3 is noticed by even those without severe 'pitch' sensitivity.

I think the ebay seller mentions something like this in the marketing verbiage.

Nice looking stuff he's selling (reasonable prices by audiophool standards of such)

John

[Listens2tubes]

I have 2 heavy plates of glass. I tried once to put an LP sandwich in the oven at about 150 degrees, sht it off and let the oven cool down with the album in the glass sandwich. It flattened it out, but the temp was too much.

When I have another candidate, I will try 125 degrees (F) and see how that works. This process is called tempering and is done with metal castings all the time. The trick is a controlled temperature and a slow cool rate to take the stresses out of the poor warped LP.

Furutech has a flattener for About 2K if you really want one. Or perhaps a group buy?

Wayner

Try setting the your sandwich in the sun, then let cool in the shade. 

[Wayner]

I have thought about that. How long do you think?

Wayner

[Photon46]

Wayner's right about the cooling cycle, a long cool down helps. I don't use an oven though. Instead, I use a photographer's dry mount press and put the record in that sandwiched between carefully cleaned 3/8" thick plexiglass sheets. A brief heat up to about 135 degrees F. for 5-10 minutes followed by a several hour cool down corrects or helps most, but not all warped records. I don't clamp the press, just the weight of the heating platen floating on the record is sufficient. Sometimes a couple cycles helps more. You've got to be uber-careful not to overheat things. Whatever you use, always check the temperature of oven, press, whatever, with an accurate digital thermometer. Every situation is different, you have to experiment. The combo of weight, heat, & timing have to be right. I bought some cheap $1 records, left them in the car to warp them, and experimented with those before trying to correct the good stuff. Records with tightly bunched small warps that are like ripples are impossible to fix in my experience.