The Shop > Tools
Another Inverted parting tool ?
Bernd:
John,
It was actually picking up the "whole" saddle on the rear flat way of the lathe.
Tell you that's quite a frighting sight to see that happen. :bugeye: The problem was that the screws holding the gib on were a bit loose. Tighting them only let the saddle bounce up and down on what ever clearence there is between the gib clamp and way.
I think the lathe is to light for the kind of parting I want to do.
Like I said in your post on fixing Darrens lathe, I need to go through mine sometime and give it a good tune up.
Bernd
Pelallito:
Bernd,
What kind of gib does your lathe have? On mine, they are plastic and, to my way of thinking, can't be too strong. Mine also lifts everything and the parting tool ends up on top of the started cut. As you said, it is a frightening sight.
Fred
Darren:
I used to have quite a few parts made at a fully fledged machine shop.
I once asked the owner about rear toolpost parting, is reply was something like.
"if you can't do it from the front correctly then you shouldn't be thinking about going around the back"
Apparently, his words, rear parting is for bigger machines that can handle the extra stress, keeps one tool permanently positioned thus saving time in a working shop. But it's still not ideal.
Bernd:
Fred,
The Grizzly has cast iron for the gib in back. At least I didn't see any plastic when I took it off to clean one time.
Bernd
Pelallito:
Bernd,
Mine are a sort of white colored plastic. I always Assumed they were the factory gibs. Who knows if I was right, the Bogs knows. So much for my Shadow impersonation. :(
Since he had a 12" Atlas that he tweaked a little, he must have looked at them a time or two.
Darren,
Thanks for that quote and explanation. I bought that particular tool holder after reading somewhere, who remembers where, that the rear mounted parting tool was better for a small lathe. :scratch:
Thanks for the help and advice.
I will be doing something about it soon.
Regards,
Fred
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