Applying Greaseless Polishing Compound..

69_knives

69_knives

Joined
Nov 20, 2008
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I had to do some polishing today and thought I'd make a video of dressing a wheel, cause I know there a few folks that are interested, that and my other wheel dressing video really sucked. Not that this one is golden globe material or anything. :)

Anyway, here's the funny video of me dressing a wheel.

http://www.youtube.com/watch?v=LlB0jQEEMfM
 
Is that a 50hp buffer?:D Ive never seen a buffer with a shaft that big (or your hands are really small:eek:) Good vid.
 
It takes practice even if you have the appropriate equipment.

Sometimes pre scorching the wheel helps the compound bond on a new wheel.

Application requires a slower speed, usually accomplished by starting and stopping the machine before it gets up to full speed while holding the compound in contact with the wheel. On capacitor start motors this usually blows fuses or breakers.

George
 
Great thread.
So once the compound is applied how long do you wait before you can polish?
Do you polish at the same rpm as normal polishing, say 1750 rpm, once applied?
How often do you have to re-apply the compound, under normal conditions?

I have a spare variable 1 hp DC motor. Setting this up with bearings blocks and adding 2 polishing buffers - would that be a good plan / setup?

Thanks for your inputs.

Dennis
 
Once the compound is applied it has to dry, how long depends on how thick it is and how warm the ambient temp is. Generally at least 1/2 hour to an hour to dry in a sunny window. You also have to crack the hardened compound before using it or it will be like a grinding wheel; just take a hammer and crack it like an egg shell.

1750 rpm is fine, though I think most of our machines run a lot faster, in the 3000 rpm range.

Hard to say how often you'll need to reapply. Sharp edges will clean off a wheel in the blink of an eye. It's kind of like sanding, if the prior prep is done well, you don't need to spend much time on the next grit.

1HP will probably be OK as long as the torque doesn't drop at low rpm. We actually have a machine with a gear reducer, shaft and low power motor that we used to use to dress large wheels.
 
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