I wanted a low profile and stable build plate holder (and not too big) so I decided to design (and slightly over engineer) one that could hold my A1 Mini print sheets as well as the one's for my Creality Ender 3V3KE printer (should easily take A1 build plates as well).
The holder's got four slots 1.2mm wide (should fit all standard Bambu Lab build plates) and is 90 mm long x 85.6 mm wide and only 20 mm tall so it's nice and stable even with only one build plate in it.
I've uploaded a 3mf file I generated with OrcaSlicer V2.1.1 that I used to print with 3DQF's ECO-PLA - this profile uses 0.6mm inner and outer wall widths with a 1st layer of 0.2 mm and then shifts to 0.24 mm layers after that - there's also a FreeCAD file and .step file.
Using the OrcaSlicer profile it takes around 1 hr 26 mins to print and uses just under 55 gms of filament.
For slicing yourselves you can getaway with using 2 perimeters and 15% infill.
Enjoy
The author marked this model as their own original creation.