nozzle holder

my 7 year old son designed this for me with tinkercad, i helped him with some measurements, but most of all he did by himself.
the holes are tight enough to screw the nozzles in, first time i used a tool, but after that i could just fit them in by hand.
what also was useful is the 45 degree angle, I found out that it was easy to clean the bed a bit.
used 0.4 nozzle and walls are between 0.8 and 1.2