Cutting PVC Pipe with Miter saw

Posted by Bobk207 on January 9, 2007, 10:42 pm

> > Glenn wrote:

> >> Any good carbide tip will give a good clean cut. A fine tooth will burn
> >> it somewhat cutting through and you will have a ragged cut.
> >>> bdeditch wrote:
> >>>> I need to cut about 200 pcs of 2" PVC pipe. I want to use my miter saw.
> >>>> Whats the best type of blade for this?
> >>> A very find tooth blade ... think hacksaw-like.
> >>> Matt

> > Too coarse and you will have a chipped edge which is really ragged!
> > Matt

Its the number of teeth per inch on the blade that gives the smoothest
cut.
That's why that metric is imprinted on the blade and that's why the
advice
to think like a hack saw was smart advice and the fallacy claiming any
carbide tip was dumb.

Any blade equivalent to a finish plywood blade will suffice for cutting
PVC
or most any other non-mettalic tubular material.

--
<%= Clinton Gallagher
NET csgallagher AT metromilwaukee.com
URL http://clintongallagher.metromilwaukee.com/
MAP http://wikimapia.org/#y=43038073&x=-88043838&z=17&l=0&m=h

this part of your post is unclear to me
........the fallacy claiming any carbide tip was dumb. ........

please explain

cheers
Bob

Posted by Art on January 10, 2007, 5:01 pm

Bobk207 wrote:

>
>
> Its the number of teeth per inch on the blade that gives the smoothest
> cut.
> That's why that metric is imprinted on the blade and that's why the
> advice
> to think like a hack saw was smart advice and the fallacy claiming any
> carbide tip was dumb.
>
> Any blade equivalent to a finish plywood blade will suffice for cutting
> PVC
> or most any other non-mettalic tubular material.
>
>
> cheers
> Bob
>

Technically the best blade for cutting PVC and most plastics (and
aluminum) would be one with a 0-5 degree negative rake. The rake being
the angle that the cutting tooth leans forward.
In practicality these blades are damn near impossible to find and when
you can they are rather expensive.
So the next best thing is, as you said, a fine tooth blade. Generally
speaking the more teeth, the less rake which is more important than
number of teeth. PVC, plastics and aluminum cut best when the tooth
scrapes it's way through. A positive rake blade will tend to pull the
material into the blade where a zero or negative rake will not.

This is exactly why many folks will install a circular saw blade
backwards to cut vinyl and other this plastics that are prone to chipping.

All that said, whatever blade the op has will probably work just fine
for cutting PVC pipe. If however someone were doing production cutting
and needed a smooth edge it would probably be worthwhile to track down
the correct blade.

--
Art

Posted by Steve Barker on January 8, 2007, 10:18 pm

I've cut all sizes of pvc on my radial arm saw with the standard cross cut
blade. No chipping. About any blade EXCEPT a real fine one will work.

--
Steve Barker

>I need to cut about 200 pcs of 2" PVC pipe. I want to use my miter saw.
> Whats the best type of blade for this?
>

Posted by Bobk207 on January 8, 2007, 10:34 pm

bdeditch wrote:

> I need to cut about 200 pcs of 2" PVC pipe. I want to use my miter saw.
> Whats the best type of blade for this?

Carbide tripe chip tooth form

here's a reasonable choice

http://cgi.ebay.com/NEW-OLDHAM-100-P7260-GRIND-10-SAW-BLADE_W0QQitemZ190048383273QQihZ009QQcategoryZ79708QQssPageNameZWDVWQQrdZ1QQcmdZViewItem?hash=item190048383273

cheers
Bob

Posted by bill allemann on January 9, 2007, 9:56 am

try using the blade that's on your saw right now.
it will work fine.

>I need to cut about 200 pcs of 2" PVC pipe. I want to use my miter saw.
> Whats the best type of blade for this?
>

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Cutting PVC Pipe with Miter saw - Page 2