Cutting Hardibacker

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  #1  
Old 03-06-03, 06:39 AM
jnsells
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Cutting Hardibacker

I was wondering what is the easiest and most efficient way of cutting cement backerboard. Possibly a circular saw with a masonry blade, or a jigsaw? Any suggestions would be greatly appreciated.
 
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Old 03-06-03, 02:14 PM
moechris
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Circular saw with carbide blade works

What I do not know is how a carbide blade would hold up if you had to make a lot of cuts. I have used the jigsaw as well as the scoring and bending. Of the three circular saw worked best.
 
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Old 03-06-03, 06:05 PM
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I've used a Rotozip with a carbide bit. The bit lives a fairly short life in this application, so you should make all the simple straight cuts you can by scoring with a carbide knife and snapping. I prefer to score both sides a half-dozen times each.

Make the Rotozip bit last longer by saving it for the more complicated cuts. Do your cutting outside to avoid a big cleanup job. If you have much to do, buy a few bits to save yourself some trips to the store. Try not to let the bit overheat.
 
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Old 03-07-03, 07:15 PM
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Hi folks,

The carbide blade holds up pretty well. I use about a six-dollar one, and you can cut a lot of backer board with a single blade. You won't be cutting any wood with it, though.
 
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Old 03-08-03, 09:08 AM
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John, what kind of saw is your carbide blade in?
 
  #6  
Old 03-12-03, 05:49 PM
WJS_SR51
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You can use a black concrete cutting abrasive blade in a circular saw, or a carbide tipped metal blade or a carbide Remgrit blade in a jig saw or score and snap with a carbide scoring tool or a dry cut diamond blade in a "skill" saw (circular saw) or a dry cut diamond blade in a 4 or 4 1/2 inch hand grinder. The choices are many.

The cheap black concrete cutting blade makes the smoothest cut.
They cost ?? $ 4.oo ??
 
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