CraftBot 2.3Kg Filament Spoolholder

The Spoolholders of the new CraftBot are fine, but just to small to hold the heavy 2.3 kg filament rolls from RepRapworld.
So I made one myself to fit as second filament holder on the CraftBot. It's designed to be printed with a minimum of support structure, that's why it's asymmetric. The original bolts of the CraftBot can be re-used.

To be strong enough not to bend under weight, I sliced it with 25% infill and 7 loops -so minimal 2.5mm skin- in Kisslicer. Layer height 0.3mm and suppo