This is a remix of G.wrks Spare steel sheet holder wall mount (thanks a lot!). It removes the screw holes for mounting with adhesive strips. It also adds wedges at the back that make the strip ends accessible after mounting. I have used Tesa Powerstrips (small) to mount, pulling on the accessible ends enables to remove the wallmount again (tested).

I have also added a longer version that can hold the steel sheet horizontal (font of sheet properly oriented). With the removed parts this fits just fine. It's a matter of taste so pick which one you prefer. The wall mount photo shows the horizontal version, there is also a photo showing them side by side (front and back with wedges, models contain the smaller wedge of 10mm height).

Print Instructions

I have printed this with PETG. There is a considerable amount of stringing which must be removed afterwards (on the second print I reduced travel speed tp 130mm/s and Retraction Speed to 40mm/s, got a little better but not a lot). PLA might yield better results but I haven't tried that myself. Like G.wkrs model this is properly oriented to print.