03-05-2016, 10:47 AM
Between centers - good man. I use a pointy stick in the chuck, marked for #0 so it goes in the same way each time. The dog leans up against one of the jaws. Much easier/quicker than mounting a faceplate and a much better choice than using the chuck as a chuck on one end.
I present my shiny new threading bar. And the lack of adjustable dials on the mill/drill bit me again on the setscrews.. "was that two turns plus 78, or..?"
No matter, it's a rock solid 3/4" bar. Even at a 5" stickout there wasn't a hint of chatter. The last image is the finished thread. This was done on a horizontal mill using the .050" feed (for 20 TPI) and plunging .005" straight in for each pass. The last two passes were spring cuts.
I present my shiny new threading bar. And the lack of adjustable dials on the mill/drill bit me again on the setscrews.. "was that two turns plus 78, or..?"
No matter, it's a rock solid 3/4" bar. Even at a 5" stickout there wasn't a hint of chatter. The last image is the finished thread. This was done on a horizontal mill using the .050" feed (for 20 TPI) and plunging .005" straight in for each pass. The last two passes were spring cuts.