cutting hardi board

Bud Cline · 04-14-2011, 07:59 PM

condoremodel,

We are glad to have you here, but if you intend to stay around a while (and we think you should)...you should start your own thread and not hijack this one. Pick a topic and begin your first post in the appropriate department. Ceramic tile is hidden in the flooring department here.

Just thought I'd mention that.

acglobal · 04-16-2011, 11:32 PM

As a flooring contractor, i have used a circular saw for over 15 years to cut CBU's without any problems. Wear a mask and cut outside on sawhorses.

analogmusicman · 04-19-2011, 07:38 PM

get this: a video I was watching said that some people put a carbide blade BACKWARDS in their Skilsaw and cut Hardie-board that way. this supposedly actually SHARPENS the blade. to the guy's credit he said that he only heard this and couldn't vouch that it worked. hmmm...how much you wanna bet "Jazman" says this is idiotic. (but tries it anyway!

)

tnx,

Bud Cline · 04-19-2011, 07:52 PM

Quote:

some people put a carbide blade BACKWARDS in their Skilsaw and cut Hardie-board that way.

Well it works but don't know about sharpening the blade.
That method also works for cutting sheet metal for metal building skin.

In the case of cutting the Hardi the method expels a ridiculous amount of hazardous dust.

golferadam · 10-25-2011, 10:02 PM

I have somewhat similar question. I've framed a garden tub surround and have 1/4" hardibacker laid over 1/2" plywood for the surround/deck. I am planning to cut the hole and do a drop-in tub.

Can I cut the hardibacker and plywood at the same time with the carbide grit jig saw blade?

Thanks for any feedback.

Bud Cline · 10-26-2011, 08:13 AM

Quote:

Can I cut the hardibacker and plywood at the same time with the carbide grit jig saw blade?

Try it! It may be better to use an aggressive regular saw blade in that case.

ElizabethGreene · 05-12-2012, 10:24 PM

My apologies for the thread necromancy and reviving this rather old post.

I wanted to thank this community for the advice above. I'm tiling my bathroom and a couple of inside corner cuts in Hardiboard were just not working via the score and snap method. I switched to a circular saw, used outside with a fan, and it worked fantastic.

Thanks all,

Elizabeth Greene

analogmusicman · 05-13-2012, 12:59 PM

My apologies for the thread necromancy and reviving this rather old post.

don't worry! I once replied to a post so old that the OP actually died while waiting for a reply.

tnx,