rockwool tray 4x4 cm ( 1.57x1.57 inch)

simple tray for  9  rockwool cubes , 4x4 cm (1.57x1.57 inch) with a trivet.
There is space under the cubes to see if roots have formed and to protect the roots from the water.

I recommend a wide brim because the corners will easily detach from the print bed.

print time tray :  approximately 8h 

print time : approximately 4h