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Old 09-09-2010, 10:33 PM   #1
revalot
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Default How do you convert a bech or angle grinder to a polisher?

So I have a 6 inch bench grinder and a 5' angle grinder.

I have some motorcycle parts I need to polish and would like to use both of these tools to polish the parts.

Do I need to add anything to the bench grinder for it to take a polishing wheel?

Is their a way to convert the angle grinder into a polisher and/or a buffer?

Thank you
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Old 09-10-2010, 12:25 AM   #2
Stick Figure
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Default Re: How do you convert a bech or angle grinder to a polisher?

Bench Grinder i just threw the polishing wheel on it. As far as the angle grinder, it would probably be okay if you keep the diameter with in the size of the grinder you are using.
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Old 09-10-2010, 04:47 AM   #3
z28toz06
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Default Re: How do you convert a bech or angle grinder to a polisher?

On the bench grinder, RPM may be different. Also the arbor doesn't really stick out enough to get the work you are polishing in with all the angles. You would need to take the guard off and it helps again if it is hanging off the bench for access to the wheel while moving the work around.

I bought one of these for knife sharpening. If you have a 20% off coupon its worth it. It came with rag wheels too.
http://www.harborfreight.com/garage-...fer-94393.html

As far as the hand held, same issue, watch RPM. grinders usually have one speed, buffer/polishers have several or variable, you have to watch heat build up or you can discolor chrome etc.
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Old 09-10-2010, 05:23 AM   #4
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Default Re: How do you convert a bech or angle grinder to a polisher?

Just remember that if you are using multiple buffing compounds you need a different wheel for each.

The compound will stay in the rag wheel and scuff/scratch/ruin the finish when you go to a different compound.
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Old 09-10-2010, 06:19 AM   #5
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Default Re: How do you convert a bech or angle grinder to a polisher?

You need three buffing wheels One for White Diamond, one for jewelers rouge and one for final buffing.
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Old 09-10-2010, 09:49 AM   #6
revalot
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Default Re: How do you convert a bech or angle grinder to a polisher?

Thanks guys, unfortunalty we do not have Harbor freight in Canada, but I will do some looking.

Good suggestion on the 3 different wheels did not really think about that.
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Old 09-10-2010, 11:06 AM   #7
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Default Re: How do you convert a bech or angle grinder to a polisher?

Scotchbrite wheels are a must. They will smooth the surface out before you buff and take rouge to it. My favroite rouge is green- used for Stainless, but has served me well with cast aluminum. But, the scotchbrite wheels are the foundation for a good polishing surface.
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Old 09-10-2010, 11:14 AM   #8
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Default Re: How do you convert a bech or angle grinder to a polisher?

I'm not sure about "rouge" and other polish mentioned above. But I am going to try Brasso and a silver polish for doing similar work. They are primarily for hand polishing and might be rougher than the rouge stuff for machine buffing. It's worth a try anyway. Might even be cheaper.

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