Originally Posted by
ozzie34231
I have a T&C grinder along with some fixtures. For the time I've had it I've done little grinding. I have everything to enable me to sharpen cutters, I just thought having a working Weldon would be neat. I also have a few dozen cutters that should be sharpened, both HSS and carbide.
From these communications it is clear to me that the bushings that we have are very different.
My bushing has an internal undercut, maybe 1 1/4" wide, not very deep. I think yours is the same.
Mine did not have any holes in it for air. I made a passage in the bottom to line up with the air inlet in the bottom. Air now flows freely to the inside of the bushing.
From what you've said, your arrangement has air entering the inside of the bushing from the top.
In my case it appears that the rush of air coming in from the bottom pushes the spindle up with too much force even at relatively low pressure.
This leads me to think that yours has more than one place for the air to enter the bushing. It might be hard to see.
It would help me if you would put air through your unit with the spindle removed and feel where air is entering.
Thanks,
Ozzie