How best to eliminate LP warps

@drbond thanks for the info on Mockingbird.  I saw an Orb listed here on Audigon recently, but it was almost the price of a new one, so I passed.  It did get snatched up pretty quickly.

Agree with those that mentioned using an outer ring.  If your table will accommodate one, that's a great way to go.  I had one with my VPI Classic 2 and it worked great.  

I don't think it would be a good idea to put one on my Sota Sapphire with it's suspended chassis, which is why being able to flatten my records is appealing.  I have the Sota clamp which works well, but doesn't do much for warps where the outer edge is bent upwards.

I’ll add my voice to those who recommend an outer ring. When I got one I sold my vinylflat right away.

It is far easier to use than any reflex clamp, and does the job better.

Moreover, by adding weight to the edge of your platter it will add flywheel effect and increase SQ for that reason alone. I use one with all records, warped or not.

If a research is done into using a Peripheral Ring, it soon becomes apparent that additional to the intended benefits of the increased inertia, the impact of the weight on the LP, and the reduction of the warped form around the rim, has shown, if the reports are accurate that new levels of quietness are achievable during the playback when the Peripheral Ring is present. 

Not all TT's can utilise a common design of a Peripheral Ring, so it is always best to check if the TT is compatible with the design being selected. One such design change could be the need for a shallower depth weight or a chamfered edge to a weight.

@dekay , nice thinking. The trick is there can not be any temperature differential across the record or you will make warps. Will a heating blanket and glass panes work? Sounds like a nice experiment to me!  

I just had a look at the Furutech unit. It is the same unit as the Orb with a different dress on!  The Orb is not sold here any more by license agreement. Lets see...$1150...$3270... nice racket. I'll follow @lewm to eBay.