Thru hole stop? That's sounds like an idea, how to do it?Mr. Rock mentioned rebar? There are hard spots in there that eat tooling. I mainly cut to + length on saw and mill the ends. Pretty fast this way. Most lathes don't have a thru hole stop.
That sounds like a winner.How about band sawing slightly long, then face one side on the lathe. Then go to the mill and mount them vertically in a V-block and dust the opposite side to length. Only problem I could see with collets and a stop is you have to make sure you draw the collet in the same depth each time. Turn a little tighter or have a slight variation in diameter your length will be slightly off. Might be within your tolerance as I'm really splitting hairs here.
Bruce
That sounds like a winner.How about band sawing slightly long, then face one side on the lathe. Then go to the mill and mount them vertically in a V-block and dust the opposite side to length. Only problem I could see with collets and a stop is you have to make sure you draw the collet in the same depth each time. Turn a little tighter or have a slight variation in diameter your length will be slightly off. Might be within your tolerance as I'm really splitting hairs here.
Bruce
A dead length collet chuck does not move the collet, a spindle stop through the collet will also maintain length as the part can not move.How about band sawing slightly long, then face one side on the lathe. Then go to the mill and mount them vertically in a V-block and dust the opposite side to length. Only problem I could see with collets and a stop is you have to make sure you draw the collet in the same depth each time. Turn a little tighter or have a slight variation in diameter your length will be slightly off. Might be within your tolerance as I'm really splitting hairs here.
Bruce
As mentioned--I would saw slightly longer and then finish in lathe.twenty rounds of 3/4" 1018 to 4.5" +/- .003? Ends must be faced and nicely finished (no saw marks). This is a "production" job so time is of the essence. I have a power bandsaw, lathes, mill, etc. No CNC.
That's pretty much what I did. No problem and it wasn't necessary to grind. Customer is happy, charged him two bucks apiece. He provided the stock.As mentioned--I would saw slightly longer and then finish in lathe.
If these are 4.5" long, I would place in chuck with a parallel between face of chuck and stock. LIGHTLY tap stock against parallel and machine.
Use a tool with small radius that is honed.
If surface is not satisfactory, leave a few thousands and grind as suggested.