From: muratlanne@gmail.com   
      
   "Bob La Londe"  wrote in message news:10k63n6$6ksq$1@dont-email.me...   
      
   Thinking about Jim's question about wheels for his saw mill, and my   
   simplistic replies for brute forcing a solution it made me think about   
   something I need to make at some point, and I was wondering.  Who has a   
   heavy duty ring roller?  How heavy of material can you roll with it.  I   
   am thinking basic low carbon hot rolled or cold rolled steel.  Probably   
   hot rolled.  I don't have anything heavy enough for the material I am   
   considering (and already have left over from other projects)   
      
   My alternative for my single application is to make some radius forming   
   dies for my hydraulic press.  Then I could hot or cold form as needed.   
   20 ton (my bigger press) might not be enough for cold forming.  I'd just   
   need to make two sets.  Maybe one if I got lucky.  One for testing   
   spring back, and one adjusted for that if necessary.  I could CNC them   
   out of some 4140 laying out back.   
   Bob La Londe   
   -----------------------------------   
   I looked at the HF ring roller for making large steel wheels but wasn't   
   convinced I needed it, or large steel wheels with rims within its limited   
   capacity. I've made wheels from slices of 6" SS pipe with welded spokes and   
   needle bearing hubs. Perhaps a larger one could be assembled from scrap   
   plates welded to the rough shape, hammered flat, and then CNC cut into   
   donuts with spokes and a hub at the cost of a month's membership at the   
   Maker Space. Bolting the donuts together would avoid weld distortion.   
      
   The donuts could be stepped to form the crown and then the steps ground   
   smooth enough by spinning the wheel with an angle grinder crossing   
   diagonally to both cut and turn. That's how I crowned the motorcycle front   
   tire. The tensioner pressure gauge shows little variation as the wheels and   
   blade move and I needed less than 15 minutes to adjust tracking.   
      
   https://cookssaw.com/parts/band-wheels/?   
      
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