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Aluminum build up

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Aluminum build up

Postby bosulli » Tue Jan 10, 2017 9:27 am

Have heard of aluminum loading up on abrasive surfaces. Now, I know what they are speaking of. Attached is a pic of a what I am speaking of. It's on a die grinder stone attachment.

Anyway to prevent or get aluminum off the abrasive??

IMG_1265.JPG
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Re: Aluminum build up

Postby sedanman » Tue Jan 10, 2017 10:01 am

Don't use a stone. Use a carbide burr and Pam cooking spray on the burr. Reapply often.
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Re: Aluminum build up

Postby electrode » Tue Jan 10, 2017 11:29 am

Or use industrial wax like this or maybe another brand. On a carbide burr...

CASTROL 140 Stick-Wax Metal Working Lubricant 14 oz Tube

http://www.travers.com/140-stick-wax-me ... aQodZ_UIAQ

LPS 43200 Cutting Oil, 13 oz, Wax Bar

https://www.zoro.com/lps-edge-lube-13-o ... lsrc=aw.ds
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Re: Aluminum build up

Postby MinnesotaDave » Tue Jan 10, 2017 2:45 pm

To get it off the stone, I use the dressing tool that I normally use on the bench grinder.

Side note: I've been told that grinding aluminum on the bench grinder can be dangerous to the wheel and cause it to fracture.
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Re: Aluminum build up

Postby IanC » Tue Jan 10, 2017 3:15 pm

I'm sure I've heard that beeswax is best. Or was that a strange dream?

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Re: Aluminum build up

Postby electrode » Tue Jan 10, 2017 4:33 pm

IanC wrote:I'm sure I've heard that beeswax is best. Or was that a strange dream?

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Probably works. I have had some strange dreams, but never dreamt about beeswax. :lol:
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Re: Aluminum build up

Postby Poland308 » Tue Jan 10, 2017 6:22 pm

I saw a grinding stone in a surface grinder explode as someone was useing it on aluminum. Fortunately he was standing a few steps away when it went. But it mangled up the guard shield that was at the end of the machine, and bent the mandrel for the wheel..
I have more questions than answers

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Re: Aluminum build up

Postby bosulli » Tue Jan 10, 2017 10:48 pm

Thanks for the replies. Prob can find bees wax and Pam. Going to have to search for carbide burrs. On the comments about stones disenigrating, Note the tip of the stone in the pic. It was coming apart. After the pic, I cleaned the stone in pic with my grinding wheel, the went at it again. Except using the top of the stone, and it began to disenigrate.

Thanks again guys. Now to search for carbide burrs.
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Re: Aluminum build up

Postby electrode » Tue Jan 10, 2017 11:17 pm

Look here for info on carbide burrs as I asked this question recently:

viewtopic.php?f=5&t=10425
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Re: Aluminum build up

Postby weldin mike 27 » Wed Jan 11, 2017 5:45 am

There are specific burrs for aluminium. They have a very coarse cut, to stop or reduce the loading issues you are seeing. Regular steel cut burrs have a fine cut.

http://www.suttontools.com/products/alu ... hank-b218/

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