From: null@void.com   
      
   "Jim Wilkins"  writes:   
      
   > "Jim Wilkins"  wrote in message news:vrmdsr$207r$1@dont-email.me...   
   >   
   >> Hardwood end grain bearings held up for a while under light loading,   
   >> they needed to be easily and frequently replaced.   
   >   
   > The point of that rambling is that I could buy a good solution at   
   > substantial expense or build an adequate one with basic machine tools,   
   > without either my attempts at rotating machinery were necessarily   
   > pre-industrial and largely made of wood, more models than practical   
   > productive machines. The fit and alignment of shafts and bearings was   
   > the main limitation. My only partial success was assembling small air   
   > compressors before relatively inexpensive imported ones became   
   > available in the 1980's.   
   >   
   > The Holtzapffel series and "De Re Metallica" show the state and   
   > difficulties of mechanical technology before Maudslay's precision   
   > lathe revolutionized it in 1797. "English and American Tool Builders"   
   > describes the rapid progress it enabled.   
   > https://www.gutenberg.org/ebooks/72046   
   >   
   > Some of the machine tools mentioned and shown in engravings are in the   
   > American Precision Museum in Vermont. New England has also preserved   
   > some of its early industrial heritage.   
   > https://americanprecision.org/   
      
   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.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)