So the place wih big toys has 120V 12-14" cutoff saw. Rather like this one:
http://www.drillspot.com/products/62747/Milwaukee_6180-20_Abrasive_Cut_Off_Saw?s=1a

It's a PITA, it regularly trips the 20A breaker under heavy
loads. {Why would anyone make a power-pig like that NOT
120/240???}

Got to wondering... how popular/available are air powered bench
cutoff saws? That shop has a good air supply given our duty
cycle.
--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

I've never noticed an air powered chop/cutoff saw, but that doesn't mean
much.
With a good air motor, one could be converted, though.

There are 30A breakers available for circuits wired with 10 gauge wire and a
appropriate plug/receptacle set, which might only be worthwhile if the saw
stays in one location (but that might provoke/summon the goddess of
electrical power Smocahontas).

I have an old genuine Chicago Pneumatic (not Chicago of the west Pacific)
handheld disk/wheel grinder that would zip thru long cuts in sheetmetal at a
fairly impressive rate.
I first used it when I was working in autobody collision repair, and I could
section out a quarter panel as fast or faster than with an air chisel.. and
with very little distortion of the sheetmetal.
And this was with a thick wheel maybe 1/4" thick.. I wasn't aware of any of
the thin glass-strand reinforced abrasive cutting disks back then.. around
1978.

The CP grinder is a bit of a monster as far as air consumption, but also
powerful. It incorporates a safety feature to release an internal steel ball
to block off the air source if the RPM exceeds a safe limit (never found
where that limit is though).
It definitely wasn't designed for autobody work, but heavy structural steel
work instead.

I saw one on eBag a while ago for some dirt cheap price, but that is one
tool that a dude doesn't need more than one of.

--
WB
..........


"David Lesher" wrote in message
...
So the place wih big toys has 120V 12-14" cutoff saw. Rather like this
one:
http://www.drillspot.com/products/62747/Milwaukee_6180-20_Abrasive_Cut_Off_Saw?s=1a

It's a PITA, it regularly trips the 20A breaker under heavy
loads. {Why would anyone make a power-pig like that NOT
120/240???}

Got to wondering... how popular/available are air powered bench
cutoff saws? That shop has a good air supply given our duty
cycle.
--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

"Wild_Bill" writes:

I have an old genuine Chicago Pneumatic (not Chicago of the west Pacific)
handheld disk/wheel grinder that would zip thru long cuts in sheetmetal at a
fairly impressive rate.

But what we need is a bench cutoff saw.....I wondered if they existed...

--
A host is a host from coast to
& no one will talk to a host that's close........[v].(301) 56-LINUX
Unless the host (that isn't close).........................pob 1433
is busy, hung or dead....................................20915-1433

On Tue, 13 Mar 2012 04:41:59 +0000 (UTC), David Lesher
wrote:

"Wild_Bill" writes:

I have an old genuine Chicago Pneumatic (not Chicago of the west Pacific)
handheld disk/wheel grinder that would zip thru long cuts in sheetmetal at a
fairly impressive rate.

But what we need is a bench cutoff saw.....I wondered if they existed...

One of our Neolithic Wreckers, O'deen, invented that years ago.
I was looking for the work mutt article when I found this link.
Please follow it from spokeshave's article on. I miss the old guys.
sniffle, sob, HONK
http://groups.google.com/groups/search?as_q=work+mutt choose classic
Action Norm

And for those of you who forego the nostalgic, here's the start of
that:
--snip--
Since Floyd deciede to get nostalgic on us, I thought it was high time
to repost this:

ActionNorm

Tom Bruce writes:

Seen the ads for _This Old House Magazine_? Wondering where it will
all
end? Well, the fun's not over, pals and gals, 'cuz now we have NORM
ABRAM ACTION FIGURES!

No reason for the tools to stop hummin' and the fun to stop comin'
when
they roll those closing credits! Now you and all your little
"apprentices" can have hours of fun with your very own ActionNorm(TM)!

Basic ActionNorm(TM) Figure comes with flannel shirt, blue jeans,
OSHA-approved MiniWorkBoots (TM), working tape measure, glasses, goofy
grin, and detachable arms, hands, and fingers.

Think of the fun you and your kids can have patching up ol' Norm when
he
does a "boo-boo" on the table saw -- you can learn safe shop practice
and microsurgery all at the same time!

ActionNorm(TM) PowahPak Tools include battery-powered Belt Sandah(TM),
BisKitJoinah(TM) and AihStaplah(TM) among many others. These cost as
much as the full-sized tools Norm uses on TV, and they wear out just
as
fast too!

ActionNorm(TM) WorkPak includes ToolBelt, plans for a miniature
blanket
chest, Lumbroid(TM) Action Building Material, folding edible
Extend-O-Rule, made-to-scale 1" wire brads, and Tourn-O-Kit RepairPak
for when Norm does a "boo-boo" on the table saw.

ActionNorm(TM) Endorse-o-Pak includes signed agreements with most
major
tool manufacturers, a toolbox full of real cash, and a Talking
Mouthpiece(TM) lawyer figurine which utters 12 baffling but
authoritative phrases!

BUT WAIT....THERE'S MORE!

Ever wonder whose Delta Norm's checkin' out when he's not in the shop?
Well, she's here, she's from Revere, and her name's DoveTail
Donna(TM)!

DoveTail Donna comes with Save The Rainforests T-Shirt, designer
jeans, OSHA-approved patent leather WorkBooties(TM), and fully
equipped DoveTail Donna(TM) ToolBelt (choice of earth tones or
teal/purple/black). Optional accessories include chuck-key-lanyard
hair band, emery boards (80, 150, 220, and 340 grit), and full line of
Bartley's Gel System Cosmetics. Optional outfits include
NurseDonna(TM) outfit with Tourn-o-Kit and Press-o-Bandages -- that's
right, DoveTail Donna's a real RN, so that when ActionNorm does a
"boo-boo" on the table saw, she's right there to help! Remember, kids,
ActionNorm(TM) gets it done twice as fast when Donna's holding the
other end of his workpiece!

AND IF YOU ACT NOW, WE'LL THROW IN A FREE BOOK!

Ever wonder why Norm's projects go together first time, every time?
It's because he knows what every professional craftsman knows: those
"swear words" are eally _secret mantras_ which can improve your
projects and and make them look just like they were done by the pros!
Now, in _Talk Like a Tradesman with Norm Abram_ YOU can learn to cuss
just like real craftsmen do! Norm lets you in on the "trade secrets"
that were "too much" for _This Old House_ and _New Yankee Workshop_:
-- "Sonofabitchin' bahstahd!" -- the way to drive big nails straight
_every time_!
-- Get those joints tight, tight, tight with "mizzable cahksuckah"!
-- "the hahse ya rode in on" -- handling problem personalities at the
Home Center and on the jobsite!

We'll throw this valuable book in FREE with your purchase of
ActionNorm and DoveTail Donna -- or you can take it as your FREE GIFT
for joining the Norm Abram Woodworkah's Book Club! Other titles
include:

--"Make Things Which Have Geese On Them with DoveTail Donna"
--"Martha Stewart's Guide to Heavy Earthmoving Equipment"
--"Clip Your Own Poodle and Save A Bundle with Bob Vila".

Operators standing by....

--
John Gunterman ..... http://www.shavings.net
--snip--

--
Intuition isn't the enemy, but the ally, of reason.
-- John Kord Lagemann

On Sun, 11 Mar 2012 05:00:55 +0000 (UTC), David Lesher
wrote:

So the place wih big toys has 120V 12-14" cutoff saw. Rather like this one:
http://www.drillspot.com/products/62747/Milwaukee_6180-20_Abrasive_Cut_Off_Saw?s=1a

It's a PITA, it regularly trips the 20A breaker under heavy
loads. {Why would anyone make a power-pig like that NOT
120/240???}

Sorry to dredge up the dead, but it has to be said - and wasn't...

IF that abrasive chop saw has a motor that is rated at 15A full load
and is installed on a dedicated 20A circuit, and is tripping out a 20A
breaker on a regular basis, that saw is trying to tell you something -
BACK OFF THE FEED PRESSURE when the spindle RPM drops off - you
are probably close to stalling the motor to get the breaker to trip.

You're going to release the "Magic Smoke" from the motor, then you
have to throw it out and get another chop saw.

If this is being run by an employee who doesn't care if he burns up
company property... Build an ammeter into a box mounted above the
machine, and tell them to stop pressing down so hard when the needle
hits the red line drawn at 15A. If it gets extreme, you might have to
lock the breaker panels and make tripping the breaker an infraction
for abuse of company equipment...

And if it isn't on a dedicated circuit, you need to get it on one -
chopping the power off at full load and instantly stalling the spindle
isn't good for the motor. It cuts the cooling air when it doesn't get
a chance to coast down unloaded, and you'll burn up the motor.

Got to wondering... how popular/available are air powered bench
cutoff saws? That shop has a good air supply given our duty
cycle.

Air power is very inefficient for a large stationary tool like that -
conversion losses would override the burst power advantages.

IMHO the only way it would make sense is in an explosive atmosphere
like a refinery where you don't want to make any more sparks than
necessary. Or on handheld tools where a 2HP electric drill gets
rather warm, and air tools tend to self-cool.

Or when the tool is mounted on a machine with an arm that rotates
around the work, and a rotating air coupling is a lot easier to rig
than electrical slip rings.

If you have a duty load like that, you need to switch to an electric
drive Cold Saw. Go look on the right column of that drillspot page,
they list one for a little under a grand.