Gallery, Projects and General > The Design Shop
Collets in Super 7 tailstock
JohnHaine:
Has anyone made a Myford spindle nose thread on the end of the tailstock barrel? I would like to be able to fit Myford collets to the tailstock to hold larger drills etc. The diameter of the barrel is larger than the od of the threaded spindle nose so there should be enough meat for a thread. Carefully applying a file to the metal suggests that it isn't very hard. Any advice or experience welcome!
John Rudd:
What size of drill were you thinking of?
IIRC the ML 7 has an MT2 in the tail.....why not sleeve for bigger sizes to MT3?
I have a Chester 9*20 that has an MT2 taper, I use a 13mm chuck with blacksmith drills up to 25 mm....if I need bigger holes then switch to boring.....
Depends on what you are doing?
JohnHaine:
It's not so much size as grip that I want, as well as not having the build up of misalignment between taper shank, chuck and drill.
Jonny:
You will have exactly the same misalignment no matter what you do.
Gripping power, have you seen what a good quick release chuck (not Asian) will hold along the lines of Metabo yet alone a keyed Jacobs chucks.
Gripping power of keyed chuck is more than ER where cutters constantly drop, I am often too idle too change 15 secs and mill with a cheap keyed chuck.
Meldonmech:
I have built a Myford collet holder for my cutter grinder, it works well and holds all my cutters positively. The screw cutting of the barrel was straight forward. My barrel was mild steel. I cannot for see any problems, your tail stock barrel must be 1.125 inch dia. to take the thread. Seems quite a good idea.
Good luck David
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