Gents,

I'm at the last stage of design and can't make up my mind which assembly is better:



Left one: two up-side-down L shaped elements with a few rectangle pieces wedged between them

Right one: two separate 'boxes' bolted together to form the same shape

The bit sticking out on the top will be a rotating shaft (low speeds around 100RPM, the bottom part of the shaft is not shown) and I'd like that to be as steady as possible. The Z assembly will be sitting on the front with rails attached to the shown supports. Everything will be made from 15mm plywood for the prototype.

Any suggestions are much appreciated.

Regards,
dsc.