From: none@none.com99   
      
   On 3/6/2026 4:09 PM, Jim Wilkins wrote:   
   > "Bob La Londe"  wrote in message news:10ofgd6$2q6gm$1@dont-email.me...   
   >   
   > I may have a job coming up for the BS-O indexing head.  Resizing a   
   > bending die.   
   > Bob La Londe   
   > --------------------------------   
   >   
   > Its center bore is likely 7BS taper, for which collets are still   
   > available, the drawbar thread is 3/8-16 like 2MT. You can use them with   
   > a shop made centering plug to accurately center a gear blank etc on a   
   > faceplate without fuss.   
   >   
      
   That's good to know.  I'll read the manual to see if it says for sure.   
      
   Mine came with a 3 jaw chuck mounted on the face.  It's probably good   
   enough for a bending die.  I'll turn an arbor with a center on one end.   
   Press or machine (depends on what I have handy) a shoulder on the arbor,   
   thread the outboard end, slide the bending die on the arbor, and cinch   
   it in place with a nut with either a machine grooved thick washer or   
   something similar.  Then I'll support the outboard end with the included   
   tail stock.   
      
   > https://littlemachineshop.com/products/collet-set-7bs-set-of-7?   
   > https://littlemachineshop.com/products/collets-brown-sharpe-7-   
   > individual-sizes?   
   >   
      
   My Tormach CNC rotary has a morse taper center.  I mostly use it with a   
   collet chuck and the matching tail stock.  I've thought about using it   
   to make a 4 sided tombstone to cut more parts in a single load, but I'm   
   not sure I'd gain much with the loss of z height and clearance needed   
   for rotation.   
      
   --   
   Bob La Londe   
   CNC Molds N Stuff   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)