Subject: Re: Using all-purpose cutting disks on power mitre box

From: stewart cooper <[email-masked]>
Date: Tue, 24 Sep 1996 15:30:55 -0300

Donald S. Meyers wrote:
> 
> I would like to see information on using one of those cut-off disks that
> are advertised for cutting tile, metal , etc on a power mitre box. What are
> the pros and cons, safety aspects, etc, when cutting steel rod, aluminum,
> SAE grade bolt material, stainless steel, etc. When can this be used in
> place of a metal cutting bandsaw and when not? Is this a safer alternative
> to the Carbide blade thread discussion currently going on?
> 
> Cheers, Don
> --
> Donald S. Meyers
> 
> I am not sure that your miter box would have the speed or the power to 
run them but you can try one. watch for over heating also the higher the 
speed the better they cut the longer they last. they will cut any thing 
but they leave a bigger bure on the bottem. safty, dust mask, safty 
glasses and a face sheld are a not bad idea. I build SS tanks and do 
about 50% of my cutting with cutting disks of on sort or anther

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From: [email-masked](Donald S. Meyers)
Date: 25 Sep 1996 13:45:09 GMT

Cheers, Don 
-- 
Donald S. Meyers

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From: [email-masked] (Bob Neidorff)
Date: Thu, 26 Sep 1996 01:08:58 GMT

Donald S. Meyers ([email-masked]) wrote:
: I would like to see information on using one of those cut-off disks that
: are advertised for cutting tile, metal , etc on a power mitre box...

I put one on an old hand circular saw and attacked a piece of aluminum
and iron casting.  Just dug into the whole mess without worrying about
correct speed, correct disk, etc.  It cut fairly fast and effortlessly
until I turned the saw a bit.  The disk quickly shattered and fell to
the ground fairly safely.  Boy was I suprised.  I don't know why it
didn't throw a chunk of disk, but it didn't.  Perhaps it all jammed in
the cut.

The fact that the disk did fracture into 30mm flying knives means that
EXTREME SAFETY CONSIDERATIONS are ESSENTIAL with these disks.  However,
while it lasted, it was a great tool.  Perhaps in capable hands, this
disk would have lasted a lot longer.  In a stationary miter saw, it
surely would have seen less side force.  I suspect that this disk was
NOT fiberglasss reinforced, based on the shattering.  Next time, I'm
going to try fiberglass disks.

I see 7" wheels advertised in Wholesale Tool for $2.40 while 10" wheels
are $4.50.  These are no brand fiberglass wheels for cutting steel.
Nortons are more expensive and likely much better, based on my limited
experience with Norton and imported abrasives.

Bob Neidorff <[email-masked]>

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From: [email-masked] (Bob Neidorff)
Date: Thu, 26 Sep 1996 01:11:33 GMT

Donald S. Meyers ([email-masked]) wrote:
: I would like to see information on using one of those cut-off disks that
: are advertised for cutting tile, metal , etc on a power mitre box. 

One other point.  There are reinforced disks meant for hogging
steel which are tougher and more expensive than those meant
for masonry.  I assume that there is a reason for that...  :-)