The Murphy Builders Site

Was dressing an aluminum part on my high speed grinder when a neighbour walked in to check out my build progress. When he saw what I was doing he went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he said.
Anyone know about that?
Thanx
Brian
779R



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Yes if you mix enough iron/steel dust with alum dust you can apparently
create an explosion. I've read about it...never seen it personally in all
the time I've been "bad" as I still have my eyebrows (well I did before I
tried to light that oil stove up at the lake!!!). I rarely grind much on the
bench grinder. I use the belt sander all the time though (of course using
alum oxide paper...before someone makes not of that!)

Wayne

----- Original Message -----
From: "Brian Breathnach" <breathnach@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Sunday, November 06, 2005 1:17 PM
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a neighbour

walked in to check out my build progress. When he saw what I was doing he
went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he
said.

Anyone know about that?
Thanx
Brian
779R



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Hi Brian,

I just googled "grinding aluminum fire hazard". Results yielded:
http://www.jlab.org/ehs/manual/PDF/6122 ... inding.pdf

Apparently, it can, under certain circumstances for thermite....


Fred



-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of
Wayne G. O'Shea
Sent: Monday, November 07, 2005 2:02 PM
To: rebel-builders@dcsol.com
Subject: Re: Fire hazard

Yes if you mix enough iron/steel dust with alum dust you can apparently
create an explosion. I've read about it...never seen it personally in
all the time I've been "bad" as I still have my eyebrows (well I did
before I tried to light that oil stove up at the lake!!!). I rarely
grind much on the bench grinder. I use the belt sander all the time
though (of course using alum oxide paper...before someone makes not of
that!)

Wayne

----- Original Message -----
From: "Brian Breathnach" <breathnach@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Sunday, November 06, 2005 1:17 PM
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a
neighbour

walked in to check out my build progress. When he saw what I was doing
he went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard"
he said.

Anyone know about that?
Thanx
Brian
779R



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Something about mixing fine aluminum dust with fine ferrous oxide dust
creates thermite. Thermite goes boom. Do a search you'll find a few were
guys supposedly got burned.

Scott

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Brian
Breathnach
Sent: Sunday, November 06, 2005 11:18 AM
To: rebel-builders@dcsol.com
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a neighbour
walked in to check out my build progress. When he saw what I was doing he
went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he
said.
Anyone know about that?
Thanx
Brian
779R



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Hi Brian !

Not only is it a fire hazard, but it's no good for the wheel.
Our chapter has a firm policy, and signs, saying "NO aluminum grinding
- it plugs up the wheel, and is very hard to remove" ....

The belt sander is a marvelous gadget for rounding corners,
and deburring edges of thicker sheets.

......bobp

-------------------------------orig.-------------------------
On Monday 07 November 2005 02:01 pm, Wayne G. O'Shea wrote:

Yes if you mix enough iron/steel dust with alum dust you can apparently
create an explosion. I've read about it...never seen it personally in all
the time I've been "bad" as I still have my eyebrows (well I did before I
tried to light that oil stove up at the lake!!!). I rarely grind much on

the

bench grinder. I use the belt sander all the time though (of course using
alum oxide paper...before someone makes not of that!)

Wayne

----- Original Message -----
From: "Brian Breathnach" <breathnach@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Sunday, November 06, 2005 1:17 PM
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a neighbour

walked in to check out my build progress. When he saw what I was doing he
went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he
said.

Anyone know about that?
Thanx
Brian
779R



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That pile of aluminum dust below my sander can provide quite a
spectacular fire even without the iron. Fortunately it doesn't light off
easilly. However incandescent steel sparks (burning carbon) from a
grinder could probably do it in the right circumstances.

Anybody who would put aluminum to a grinding wheel for any kind of
dressing operation though should really try one of those 3M unitized
wheels - you'll love it.

Ken





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Sheeesssssh!

I had no idea that kind of hazard was lurking on my bench!

Thanks Wayne, Fred, Scott, Bob and Ken for the feedback.

I have a belt sander that will now become the grinder of choice but I have
no idea if the
belt is aluminum oxide--will have to figure that out. That would eliminate
the hazard when grinding an aluminum fitting on it right Bob?

Whats the deal on the 3M unitized wheel Ken?

I would welcome your comments on any other creepy (and little known) hazards
associated with the build

Thanks again gentlemen

Brian


----- Original Message -----
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 07, 2005 11:01 AM
Subject: Re: Fire hazard

Yes if you mix enough iron/steel dust with alum dust you can apparently
create an explosion. I've read about it...never seen it personally in all
the time I've been "bad" as I still have my eyebrows (well I did before I
tried to light that oil stove up at the lake!!!). I rarely grind much on

the

bench grinder. I use the belt sander all the time though (of course using
alum oxide paper...before someone makes not of that!)

Wayne

----- Original Message -----
From: "Brian Breathnach" <breathnach@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Sunday, November 06, 2005 1:17 PM
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a neighbour

walked in to check out my build progress. When he saw what I was doing he
went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he
said.

Anyone know about that?
Thanx
Brian
779R



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My son was trying to make some thermite and mixed it up per spec and never
could get it hot enough to light off - Go figure

Britt

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Brian
Breathnach
Sent: Sunday, November 06, 2005 4:45 PM
To: rebel-builders@dcsol.com
Subject: Re: Fire hazard

Sheeesssssh!

I had no idea that kind of hazard was lurking on my bench!

Thanks Wayne, Fred, Scott, Bob and Ken for the feedback.

I have a belt sander that will now become the grinder of choice but I have
no idea if the
belt is aluminum oxide--will have to figure that out. That would eliminate
the hazard when grinding an aluminum fitting on it right Bob?

Whats the deal on the 3M unitized wheel Ken?

I would welcome your comments on any other creepy (and little known) hazards
associated with the build

Thanks again gentlemen

Brian


----- Original Message -----
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 07, 2005 11:01 AM
Subject: Re: Fire hazard

Yes if you mix enough iron/steel dust with alum dust you can apparently
create an explosion. I've read about it...never seen it personally in all
the time I've been "bad" as I still have my eyebrows (well I did before I
tried to light that oil stove up at the lake!!!). I rarely grind much on

the

bench grinder. I use the belt sander all the time though (of course using
alum oxide paper...before someone makes not of that!)

Wayne

----- Original Message -----
From: "Brian Breathnach" <breathnach@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Sunday, November 06, 2005 1:17 PM
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a neighbour

walked in to check out my build progress. When he saw what I was doing he
went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he
said.

Anyone know about that?
Thanx
Brian
779R



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You sure it was your "son" trying to make the thermite <grin>?

Scott

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Reed
Britt Civ 309 MXSG/MXRIE
Sent: Tuesday, November 08, 2005 9:48 AM
To: 'rebel-builders@dcsol.com'
Subject: RE: Fire hazard

My son was trying to make some thermite and mixed it up per spec and never
could get it hot enough to light off - Go figure

Britt

-----Original Message-----
From: mike.davis@dcsol.com [mailto:mike.davis@dcsol.com] On Behalf Of Brian
Breathnach
Sent: Sunday, November 06, 2005 4:45 PM
To: rebel-builders@dcsol.com
Subject: Re: Fire hazard

Sheeesssssh!

I had no idea that kind of hazard was lurking on my bench!

Thanks Wayne, Fred, Scott, Bob and Ken for the feedback.

I have a belt sander that will now become the grinder of choice but I have
no idea if the
belt is aluminum oxide--will have to figure that out. That would eliminate
the hazard when grinding an aluminum fitting on it right Bob?

Whats the deal on the 3M unitized wheel Ken?

I would welcome your comments on any other creepy (and little known) hazards
associated with the build

Thanks again gentlemen

Brian


----- Original Message -----
From: "Wayne G. O'Shea" <oifa@irishfield.on.ca>
To: <rebel-builders@dcsol.com>
Sent: Monday, November 07, 2005 11:01 AM
Subject: Re: Fire hazard

Yes if you mix enough iron/steel dust with alum dust you can apparently
create an explosion. I've read about it...never seen it personally in all
the time I've been "bad" as I still have my eyebrows (well I did before I
tried to light that oil stove up at the lake!!!). I rarely grind much on

the

bench grinder. I use the belt sander all the time though (of course using
alum oxide paper...before someone makes not of that!)

Wayne

----- Original Message -----
From: "Brian Breathnach" <breathnach@shaw.ca>
To: <rebel-builders@dcsol.com>
Sent: Sunday, November 06, 2005 1:17 PM
Subject: Fire hazard

Was dressing an aluminum part on my high speed grinder when a neighbour

walked in to check out my build progress. When he saw what I was doing he
went "Whoa!" "Grinding aluminum on a grinder is a real fire hazard" he
said.

Anyone know about that?
Thanx
Brian
779R



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