I made a couple of laser bed nail boards for my Creality Falcon Module on my Ender 3 V2.
I originally made this model for a nail board, that used the bamboo cutting board from Dollar Tree.
I started by making a template in Fusion 360 and exporting a DXF file for LightBurn. (The export is completely doable with a personal license - with just a few extra steps)
And glued some magnets on the bottom to keep them from moving around.
I used:
2 ea. Dollar Tree Bamboo board
1 ea. Dollar Tree 9 x 13 Aluminum pan
3 ea. Home Depot #16 x 1-1/4in Wire Nails (1oz package)
It's not for 3d printing. It's a riser for laser cutting objects. I have the Creality laser module (10W) attached and instantly burned a hole in my Carborundum Glass Build Plate.
The 10W is capable of burning a 3/4 inch hole in wood (who knew /s).
So, i looked around at what other laser cutters were using, and build my own.