I'm sure others have done this, but it's worth mentioning to those who might not have as it offers up results that I've not been able to achieve with any other method. I've laser cut a 295mm dia disc from 2mm thick PTFE, lasered the 7.25mm pilot hole and using it in place of an LP, it's exceptionally good for setting anti-skate. It's no secret that the values on most tonearms with adjustable anti-skate aren't even remotely close, but this method allows you to set for absolute neutrality with no bias whatsoever. I've used this on all 3 turntables now with excellent result. Very much worth doing for anyone so inclined. Works much better than the typical blank section of test/setup LP's. The ultralow friction nature of PTFE is handy here.
Note: this left no residue at all on the actual stylus, though I gave it a quick brush when finished.

#Music
#Turntable
#Analogue
#Vinyl
#MovingCoil
#MovingMagnet
#Antiskate