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I supported Toymods
Location:
Australia
Registered:
November 2003
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Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:24
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I've got some welded on my new manifold to grind down.
What bit for a dremel should I use?
http://au.dremel.com/html/products/accessories/gri nding.html
Bits are listed here.
I was thinking maybe 911 or 941 to get the bulk off, and then finishing with something finer, maybe 516, before polishing with sandpaper
Thoughts?
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Location:
Adelaide
Registered:
May 2003
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:27
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Do dremel make Carbide ones?
I was looking for them but didnt see any listed
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Location:
Adelaide
Registered:
May 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:28
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Yep, its a dremel carbide. No idea on the part number though.
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I supported Toymods
Location:
Perth, Western Australia
Registered:
December 2002
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:28
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Use a burr to remove the bulk, then a stone to smoooth it out.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Location:
Adelaide
Registered:
May 2003
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:33
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Ahh, one of the "HighSpeed Cutters"
I'll pick one up on the weekend.
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:39
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| oldcorollas wrote on Thu, 17 March 2005 11:36 |
the burrs are pretty useless with a dremel.
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You saying that the dremel doesnt have the torque to do the job?
If need be I'll start with an angle grinder, and finish with the dremel.
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 03:54
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| CrUZsida wrote on Thu, 17 March 2005 14:39 |
| oldcorollas wrote on Thu, 17 March 2005 11:36 |
the burrs are pretty useless with a dremel.
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You saying that the dremel doesnt have the torque to do the job?
If need be I'll start with an angle grinder, and finish with the dremel.
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not really a torque thing.. the burrs are just usually crap... they tend to fill up quickly with alloy and lose their edge quickly also.
the stones are useless with alloy as it coats the surface and again, renders them useless...
just my opinion tho.
fr shaping alloy, i'd use the 3M scotchbrite discs.. they eat thru it nicely.. and the soft ones polish ok as well.
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Location:
Melbourne
Registered:
May 2002
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Location:
Perth
Registered:
October 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 04:53
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Dremmel's can do everything, don't you remember that tele ad?
Oh yeah they said they cant hammer, but im sure they have been used for this purpose, particularly when they burn out. 
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Location:
S.E suberbs, Vic
Registered:
December 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 05:51
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if you use a burr try dipping it into some lard, get it from your local supermarket. Apparently it lubes it up and stops the aluminium sticking
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Location:
Lost in the K hole
Registered:
May 2002
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 06:18
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find a dental equipment supply place, and ask to see their amalgum burrs... 400% better than the dremel ones, and cheaper too... will cut through alloy/steel/ti/ceramic you name it like hot knife + butter
dont forget to use LOTS of cutting lubricant when grinding alloy to prevent gauling of the tool
ed
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I supported Toymods
Location:
Australia
Registered:
November 2003
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 06:30
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Thanks Ed, I was actually waiting your reply (hehe)
Will look into dental places.
Maybe I'll just book an appointment and flog something.
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Location:
Madrid - Spain
Registered:
August 2002
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 23:15
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Supposedly you shouldn't use grinding stone type wheels with aluminium as the ally gets imbedded in the stone, heats up, expands and breaks the stone. Probably not too much of a problem with a dremel but on a bench grinder, a piece of stone coming off a the bench grinder at speed can do a lot of damage. I have never personally heard of it happening, but thought I should mention it.
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I supported Toymods
Location:
Epping, Sydney
Registered:
May 2002
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Re: Using a Dremel to grind Aluminium
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Thu, 17 March 2005 23:20
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so does someone have a dremel and an amalgum burr I can borrow to mount my back seats? (I'm assuming this burr will be ok for widening holes drilled into my seat mounts)? I'm starting off with angle grinder + cutting disc and drilling holes in the area that needs to be removed, but need something to smooth and widen the area.
</hijack>
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