[TheForge] RE: Chop Saw; carbide blade

[ries]

There are actually two completely different style of cold cutting saws.
The older, traditional, heavy duty, and expensive style, usually  
called "Cold Saws" run High Speed Steel toothed blades,with liquid  
coolant, at about 40 rpm, for mild steel. Most of these saws are made  
in Europe, weigh 500lbs or more, and are priced accordingly- usually  
3 grand up to 5 grand, depending on size. These are industrial, in  
every sense of the word- the best known ones include names like  
Haberle, Eisele, Bewo, MEP, Brown, Peddinghaus, as well as US names  
like Scotchman, Dake, and Doringer. Baleigh is selling made in Taiwan  
versions of these saws.
These things are the greatest- but they cost a lot. They will easily  
cut solid 2" round. Mine has a 3 1/2hp three phase motor, and gear  
reduction that gives it about as much torque as a volkswagen bug.  
They almost never have carbide blades. Occasionally you see a high  
speed model, made for aluminum, with a carbide blade.

Then, there is a new type of saw, modeled on the abrasive chop saw  
merged with the woodworking miter saw- these usually run $400 to  
$600, are much lighter duty and lighter weight (35 or 50 lbs, versus  
500) and run a carbide blade, dry, at a much higher speed. These are  
sold by Dewalt, Milwaukee, and other US names, but are imports from  
asia, mostly china, in reality.
These things run at around 1300 rpm. They will cut much smaller sized  
stuff than a real cold saw, and are best for square tubing, or maybe  
1/4" angle iron, but the blades would get dull quick, and the motors  
bog down, if you tried cutting 3/4" round bar all day long, something  
a real cold saw will do without even blinking.

An abrasive chop saw, on the other hand, runs at 3000 to 5000 rpm-  
and I sure  would not recommend putting a carbide blade on one of  
them and trying to cut steel, even if you did have a New York City  
Yellow Pages tucked in your shirt.

Abrasive chop saws are cheap, and loud and nasty- I would not try hot  
rodding one.

ries

On Nov 13, 2007, at 2:29 PM, Ben Barrett wrote:

I thought they may have sturdier frames, too -- my chop saw has a
little chatter (side-to-side),
maybe it is just worn/abused, but I was guessing that the cold-cut
saws carry more precision,
since I've heard they leave a *very* clean cut (hardly any burring,  
even?).

ben


On Nov 13, 2007 2:18 PM, Roger R Degner <rog781 at means.net> wrote:
> Aren't the cold cut blades for a slower speed saw?
>
> Roger R Degner
>
>
>
>
> NA
> Subject: Chop Saw [ Was: RE: [TheForge] art as art]
>
> Lee,
>
> Can you put a carbide blade in any chop saw?  Or do you need a  
> special saw
> to use the blade?
>
> Aubrey
>
> ________________________________________
> From: theforge-bounces at mailman.qth.net [theforge- 
> bounces at mailman.qth.net] On
> Behalf Of lee robbins [naturadoc1 at yahoo.com]
>
> I used my new carbide chop saw for the first time
> today. Wow, almost no noise, no flying debris or
> sparks. Amazing. I had no idea. plus a narrow clean
> kerf. Im a slow learner.
>
> Lee
...
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Ries Niemi
Industrial Artist
http://www.riesniemi.com/