what about just installing bearings if you like the machine?
i don't see it being that easy to make your own unless you either have a 3d printer or a mill and the mill route would be better so you could use brass but then again bearings would still be easier.Or make new bushings yourself, it's really quite easy.
@leonz, I sent you a PM link to the bushings on eBay about 3 days ago...
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