Gridfinity steel sheet stand

A steel sheet holder for gridfinity bases. I've included 2 versions of this part. If you happen to be printing one to fit in my CORE One left panel Gridfinity tray, you should use the offset one as there isn't quite room to fit sheets in right up close to the panel (so orient it on the tray so the larger gap is facing the printer, and the side with the 4 slots aimed away from the printer).

If you're not using it with my printer tray model, you probably want the centred model. 

The slots are 1.5mm wide which fits all my Prusa printed sheets nicely.