Full Manual Turntable-What to do

I made the comment above, assuming that all know I use a "weight", not a clamp.

folkfreak:,
 
Your observation is noted. I used a ET arm for years. This arm is more sensitive to record flatness.

During this time, I experimented with different thickness, center washers.

I had Herbies make a .08mm washer for me during this time.

It worked very well! One thing that is not very much noted.. the record label thickness. This is one other aspect that is of notable consideration when thinking about these issues.

Record flatness. This (IS) the main issue when approaching this topic.

If your dealing with a "flat lp", and using a .08mm washer on a platter that has a machined relief for the lp label thickness, (shew!) ..a center (weight) is appropriate. In this scenario, a clamp is not the best option.

I believe it was Linn (of course ;-) who first recommended leaving the platter spinning. No problem on the Sondek, as it had a felt mat. But who uses those anymore?! If the platter is acrylic, it obviously could damage the LP surface if spinning during removal. Those of us with threaded clamps have no choice, but I would turn it off anyway, just out of common sense.

I have a threaded clamp on my tnt but I still leave it spinning and use the clamp. I don't feel there is any risk to the vinyl.....