What record weight for Rega RP10

It's a matter of design.....my Linn sounded much better on a lightweight thin wood shelf I put together with brads, than anything "audiophile approved" I tried.

I have a Rega P6 with a Hana ML mc cart and I use a Michell Engineering clamp (the Rega-specific version, which is made for the correct spindle height). It's lightweight, made of low-resonance Delrin, and uses the twist/collet-type clamping method.

To me, music sounds tighter and more precise, with better soundstaging and crisper transients (although I know how subject many of us are to hearing what we want to hear...)

I can't see how the clamp would stress the spindle bearing, as it only compresses the record to the mat, platter, and subplatter, all of which ride on top of the bearing.

I had a LinnSondek that really opened up when used on a balsa shelf that I knocked together with a couple of small brads

Zuman. I looked at this online and there isn’t much explanation of how the clamp works. So if I understand/assume, you apply some downward pressure then tighten the collet? As mentioned, I do have some concern about applying too much pressure on the spindle bearing. I am not sure what Rega uses, it seems to me that I read they used saffhire which would concern me about crushing or fracturing the bearing. If they are using hardened steel then no issue. Let me know if I am correct on how the clamp works.

stringreen. When I had my LP12 I made a thick MDF platform with cherry veneer and uses Aurios bearings underneath and that help substantially. I do miss the LP12 but not the issues that went with it. Not so much the table other than the tuning and adding upgrades. Plus having a suspended floor created footfall issues.but probably the best sounding table I have owned to date.

That's correct...you just press down a bit then twist the knob to tighten it. It doesn't take a lot of pressure and I've never had any sense that the ball bearing is being stressed. And mine is still working fine.