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Talk to me about dremels and bits

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Old 10-19-2007, 09:06 AM
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i have cutter stone sand paper wheels one thing to remenber to keep youre cutter clean and cool i spray it whit wd40 this is one that i did more than 10 porting job and it still like new



Old 10-19-2007, 09:16 AM
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Aluminum work?

Carbide cutters like the one directly above (I prefer smaller diameter long cutters with round ends) and sanding attachments ONLY.

I always dip my carbide cutters in a little cup of 3-in-1 oil every 3 or 4 minutes as well. It keeps the soft aluminum from loading up in the bit, and cutting is much more clean and effective.
Old 10-19-2007, 09:24 AM
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firebuick, those bits are not cheap, I have several of those but with a 1/4" shank, and if memory serves me correctly they ran about $75.00 each. I think they were Cobalt.
Old 10-19-2007, 09:32 AM
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firebuick, those bits are not cheap,

yeah i know that my best one i have several cheap one also and sand rolls and those TJ are my dermel the electric one is very cheap (16$ ) but get the job done


Old 10-19-2007, 09:35 AM
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Originally Posted by Maymybonnieliveforevr
firebuick, those bits are not cheap, I have several of those but with a 1/4" shank, and if memory serves me correctly they ran about $75.00 each. I think they were Cobalt.
You're talking about DIE GRINDER carbide bits. Dremel carbide bits are far cheaper and have a 1/8" shank.
Old 10-19-2007, 09:37 AM
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Originally Posted by BillBoost37
Originally Posted by willwren
The number one rule in grinding in metal shops and welding shops is NEVER use a grinding stone for aluminum unless it'* RATED for it, and is typically a wet process..
Previous post deleted and edited by Boost.

EdIt: Researched the Dremel site.

"941 Aluminum Oxide Grinding Stone
A high-quality industrial abrasive made for extended general-purpose grinding on metals, castings, welded joints, rivets and rust. "

There is no warning about explosions or not using on aluminum. The instruction manual for the XPR specifically states many possibilies of harm if not followed properly with no mention of the aluminum oxide bit being bad on aluminum. In fact it recommends the best speed for the 941 bit in aluminum specifiically is a 4.

This myth of exploding bits has been busted on Page 12 of the Dremel XPR owners manual downloadable on their site. Please follow proper use, operation and safety procedures whenever using tools like this.

Dremel Literature Page
The Myth of exploding bits? I've had dremel'* aluminum oxide bits explode on me when NOT using them on soft metals. And I have a very close friend and co-worker who had a piece of grinding stone embedded in his safety glasses when the stone he was using to grind aluminum exploded.

Did you read this?
http://www.ind.carborundumabrasives....g%20Wheels.pdf
Old 10-19-2007, 09:44 AM
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http://www.floridaame.org/discus/mes...tml?1151801928

The links I've posted in this topic are easy to find.

Anyone that has every had safety training to use metalworking tools has been clearly told not to grind non-ferrous metals on grinding stones made for steel. As I stated above, this is common safety practice in millions of shops, schools, and industries across the world.

For those of you who didn't know this, that'* why we have a Forum. Take this advice to heart, and share it when it'* appropriate.
Old 10-19-2007, 10:05 AM
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i have used those bits on all diffrent types of metals...
The ONLY time iv seen one "Blow Up" is when iv hit it on something or starting doing something at the wrong angel.
Old 10-19-2007, 10:41 AM
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That'* fortunate for you, Bandit.

Because you won't find an experienced machinist or welder that will EVER use the wrong stone for the wrong material.

I've clearly posted the reasons for it. If you want to ignore it, that'* everyone'* own choice.
Old 10-19-2007, 10:43 AM
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So your saying that the Maker of the product is wrong?
even though it states right on the website?


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