Crisco, maybe? Grease works well, also. Either one makes a mell of a hess, but it keeps the wheel from loading up & doing funky things to the chuck's surface geometry.On a grinder once you mount the chuck you grind it flat. The toolmakers where i worked in a machine shop used a tub of butter for coolant when they ground them in. Kinda weird and messy but it worked
This surface grinder is for sale near me. What a beautiful old machine...maybe better to look at than to use.View attachment 1177358
Had not heard of the Crisco, butter or grease. Interesting. I would flood the wheel, therefore the chuck, found the high spot then proceeded a tenth or two (I think) at a time till all of the magic marker stripes disappeared.
Could NOT let it warm up.
I saw the same thing happen on a Blanchard. It had about 200 small parts on it. When it let go it flung parts, grinding wheel chunks etc. Out the top.Had the electricity go away in the old days while blanchard grinding bucket dies. Sounded like a full auto.
I remember old timers using carbon tet and cutting oil when belt sanding big plates on a planer mill. Cancer eventually got them.
Like a mag base drill when a guy unplugs your cordI saw the same thing happen on a Blanchard. It had about 200 small parts on it. When it let go it flung parts, grinding wheel chunks etc. Out the top.
Everybody around it was on the floor crawling trying to get away. No body got hurt but everybody needed new shorts.
Wildflower,
Will do. However, some of the professional machinists here are telling me I'm headed down the wrong path. -Jerry
Days like those its good to have a change of undershorts in your lockerHad the electricity go away in the old days while blanchard grinding bucket dies. Sounded like a full auto.
Just curious, what sort of machining and materials are you planning on using that unit for?
I've done tiny ones on a surface grinder but with very light passes. What can happen is the part warps due to heat and breaks free of the magnet. Would have shields on all four sides just in case.For example: Machining a small washer to a specified thickness.
especially if its on the bottom of an I beamLike a mag base drill when a guy unplugs your cord
Having spent many years working in precision grinding the least favorite job to come up was resurfacing a magnetic chuck. We would rather have been beaten with a pretty good sized stick. Those were the days.