VPI 16.5 clamp

As bugman has said, there are other options if you dislike the stock little knurled knob.

One could also probably find a local machinist, and have them machine one for no more than $10 tops. Mark

I think the stock clamp works just fine but I have a spare SOTA reflex clamp and I love it, its nice to just pop the lever and put on and off without screwing it down and just incase it also protects label from liquid.

JFC!!! ..Get a life!!! ..The plastic clamp works just fine!!! ..If you're not happy, just use your record clamp! Oh, BTW, AJ's Basis clamp will works perfectly... just buy one of those!

There could possibly be other causes, if you are regularly experiencing slippage.

Going by memory, I'm thinking that the Spindle is only threaded so far on the shaft, One could possibly shim the Platter on the Platter-Motor Arbor, thus in effect raising the Platter on the Spindle.

Or one could swap the stock Cork Mat, and replace with a thicker Neoprene Mat. Neoprene sheet They can be gotten in 12x12 size from places like McMaster-Carr. Suitable Shore A Hardness, would be between 40-60.

With the stock Cork Mat, I on occasion would get slippage, if I didn't firmly crank down the knob tightly, but since changing to the Neoprene Mat, I never have that problem anymore.

The big metal clamps might look cool, but there's always the potential of accidently dropping it upon the record. There's less likely damage if this occurs with the little Nylon Nut.

The Rubber Mat, IMO killed two birds with one stone, less liklihood of slippage, and a Mat that is much easier to keep clean, and is non-porous. Mark

I buy the idea of a clamp covering the label, Chadnliz makes sense there. But I find it is virtually impossible to induce slippage with the stock knob snugged down. I think the amount of pressure required to make it slip would more likely stop the drive motor first....
I would never put that much pressure to cleaning to begin with. I have inadvertantly cleaned records forgetting to put the clamp on, and no slippage noted.