I started with the base plate and tried different things, like using a jigsaw, especially those parts look really poor ;-) After having marked everything and after the jigsaw experiences I milled the rest. The plate is made out of 4mm aluminium, which comes from a faceplate for a 19inch server rack. Most likely I will make a new one sometimes because it looks really not overwhleming but the drilled holes for the bearing blocks turned out to be in the right places so it's OK for now.

milling the baseplate

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