We have a wooden floor and a full Fraim and Fraim chips, I haven’t noticed any damage or even mild indentation. I also got some to support my Fyne 502 SP floor standers (tidied the bass up perfectly) again no apparent marks - wooden floors do vary in their wear though - ours are Queensland Spotted Gum and that is, I think, quite a tough one…
Who needs to slide Fraim?
I have Herbie’s under speakers too, and they make positioning them very easy, but Fraim chips under Fraim. I did find new Herbie’s made the speakers (Thiel CS1.6) sound harsh for a couple of weeks but they mellowed out after that and there was no similar when the NBLs displaced the lighter Thiels.
If you do experiment with alternatives I’ll be interested in your findings, I have considered changing the gliders for Fraim chips under the NBLs now they’re placement is optimised but haven’t got further than the idea yet.
I have solid oak wood floor, i have twin fraim rack, that is far heavier than most with just naim kit on it. You can if you wish slide it and it doesn’t mark the floor.
I have slid mine a few times backwards and forwards, while messing with cables.
Indeed - the only true “sliding” application is the speakers. The Fraim once loaded with black boxes is nigh unmovable, and I suspect it’s ill-advised to try to slide it fully loaded.
My real need for “sliding” is the speakers although a case could be made that, once properly positioned, there is no reason to be sliding them either. And they could be positioned with a blanket or such under them.
The uniform response here, another forum, and my trusted dealer, has been Herbies for sliders/gliders.