On some surface the Bambu A1 tends to move while printing.  I created these corner braces to keep it in place. 

I designed this for #6 wood screws a that is what I had laying around, however countersunk M3 should work as well. 

IMPORTANT:  If you go with the stls over the .3mf, you need to print one of the ones labeled “Switch Corner” and three of the others.  The difference is the one labeled “switch corner” has one side shortened by 1cm to accomodate for the on/off switch on the back left corner of the A1.