The Shop > Tools
Tool Post Grinder
sbwhart:
Hi Chaps
Johns got it spot on correct :thumbup:
By mounting the Router the other way round I can drive the spindle clockwise, this will also give me a better view of the action.
I did think of using the router direct but it had two things going against it:- The lower speed of 11800 rpm is far too high for external grinding and may burst the wheel so I've got to gear it down:- I stripped the motor down and its bearing just wont be up to the job of grinding they are located in a plastic housing.
Cheers
:beer:
Stew
NickG:
Stew,
does the chuck on your lathe screw on and off or does it bolt directly to the spindle? I know some of the chester ones do.
Nick
sbwhart:
Nick
The chuck is held on with three M8 cap screws so no fear of it unscrewing.
Stew
bogstandard:
What you need to remember, when toolpost grinding, the grinder is going full tilt, but you only have the job rotating fairly slowly, and the grinding pressure on the job is miniscule, so there is very little chance of your chuck coming undone if run in reverse.
You are only removing very small amounts, maybe only 0.001" (0.02mm) or even less at a time. Some people seem to think it is a quick way to remove metal, far from it.
Bogs
NickG:
Yeah, the only time I used a surface grinder I seem to remember taking cuts of 0.0001" ! I made finished off a 4 way tool post I made for a small lathe on it, it made even my machining look good!
Nick
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