@bimasta
RAUL disagrees with you, Chak —"That tiny hole at the inner position in the SS300 is not to fix it to the spindle. SAEC makes a research about and they found out that the LP/records tend to slide through a metal mat surface so its advice is that with a small nail use that hole to fix the LP to the mat and for this you have to make a tiny hole on each LP at exactly the metal mat hole position then and before play you insert the tiny nail in the LP through the metal mat hole. In this way the mat and LP spins at unison/evenly."
Neither seems worth the bother to me, or even the few seconds to think about it. And note it could be done with any other mat regardless of the material, and no one ever bothered.
Hmm, interesting. I have 6 page manual with my NOS NIB SAEC mat, the manual is in Japanese of course, but there are some pictures.
I will translate from Japanese to make sure about it.
Making a hole in the record label is indeed a strange idea, because to fix the pad from the top of the record it must goes through the record to reach a treated hole in the mat.
Fixing the mat to the spindle hole with that thin metal "bridge" under the record surface is what i expected. But maybe i'm wrong, anyway it would be nice to find the answer. It is crazy if SAEC suggested us to drill the records :)) I think a heavy record weight on top could solve the issue, but SEC never made any record weights, just a mat.
I will post some pictures later.
