From: muratlanne@gmail.com   
      
   "Richard Smith"  wrote in message news:m1pli7mqt6.fsf@void.com...   
      
   "Jim Wilkins"  writes:   
   ....   
      
   Getting a lathe again might come into view, if projects take-off.   
   A reality I need to get through is processing some ore with a bucking   
   hammer and a bucking plate - hit and grind with a flat-faced "hammer" on   
   a flat hard plate.   
   Then get a "Mark 1/2" rod-mill going.   
   If this is "sofar so good" and progressing - workshop then comes into   
   view.   
      
   ------------------------------------------------   
      
   An inexpensive rock tumbler might serve as proof-of-concept within its   
   limits of motor torque and roller friction. Adding pulleys to drive the   
   second roller from the first helps with friction.   
      
   You could build a larger one with keyed shafting, hardware store pulleys and   
   heater hose rollers. They are simple and imprecise enough to use pressed-in   
   nylon sleeve bearings.   
   https://www.amazon.com/Diameter-KEYED-Shaft-Choose-Length/dp/B0DM74LGM3?th=1   
   https://www.amazon.com/HARFINGTON-Flanged-Sleeve-Bearings-Bushin   
   s/dp/B0C3C1B8YM?   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)