|Trevor Davies 2||12/11/2012 18:40:38|
|5 forum posts|
When trying to use rear parting tool and running the motor in reverse I found that the chuck was unscrewing itself off the headstock spindle. When fitting the chuck I lock the spindle by engaging backgear and then with the chuck key tighten the chuck on its thread as much as possible by hand..
How do I stop this happening so I can use the rear toolpost parting tool?
1663 forum posts
Mount the parting tool upside down and rotate in the usual direction.
|3564 forum posts|
Please do not engage backgear, you may well end up with a broken gear.
Does the ML7R have a pin (like the Super7) on the left hand face of the headstock which engages with the step pulley for the purpose of locking the spindle?
I exhibited a simple device at Sandown MEX which prevents the chuck unscrewing and which may well appear in published form shortly.
|Brian Wood||12/11/2012 19:43:30|
|2579 forum posts|
The ML7R does have a pin as KWIL describes, use that instead of back gear, it is much more positive ion use.
|154 forum posts|
You could always fit a chuck lock of the type discussed in this thread when running in reverse:
Incidentally, Woofity's version is a little more elaborate than commercial versions. The latter were commonly a simple split collar with a single screw spanning the gap (the strain relief hole opposite the split is still required, though).
Edited By joegib on 13/11/2012 06:55:12
587 forum posts
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