Fiber cement wall paneling, how to cut?

[frityreldarn]

Hi, I was thinking of cladding the house with horizontal fiber cement panels and I'm wondering a bit about processing. It's, of course, saw blades with diamond teeth, but the sizes seem like they're only used in hand circular saws?
Can you use a fine-toothed blade on a miter and chop saw, as well as on a Dewalt table saw? I understand that the dust will make it kind of grind on the table, fence, etc.
But I need to cut long strips that must be perfect in the cut, without chipping on the top side. I'm a bit stupid, I'm going to make rounded corners...

 

[Klass0n]

Often, the blade hole patterns are different, 22.23mm for angle grinders and 20mm for hand circular saws. My miter saw has a 30mm hole in the blade.

I have tried (a bit for fun) cutting a concrete block with a Makita battery-powered hand circular saw. It was slow, but it worked. I had bought a blade at Hornbach and an insert ring to change the hole pattern from 22.23 to 20mm so the blade could be attached to the circular saw.

I unfortunately have 0 experience with table saws.

Edit, a good face mask is recommended!

 

[Snickarkirre]

The best approach is to use a proper fiber cement blade in a plunge saw and use a guide rail. If you use a "sacrificial board" like plywood or OSB under the fiber cement board and set the blade depth a few millimeters deeper than the thickness of the fiber cement board and use a vacuum on the saw, it virtually doesn't produce any dust. It's also convenient to use a plunge saw and guide rail because it's easy for the boards to not have exactly the same width at the end, etc. If you're not planning on installing boards for an extended period, but only for a weekend or so, I would rent a plunge saw since they do wear down the equipment.

 

[frityreldarn]

The best thing is to use a proper fiber cement blade in a plunge saw and use a guide rail. If you use a "sacrifice board" like plywood or OSB under the fiber cement board and set the blade depth a few millimeters deeper than the thickness of the fiber cement board and use a vacuum on the saw, it practically doesn't create any dust. It's convenient to use a plunge saw and guide rail too because it's easy for the boards to perhaps not have exactly the same width at the end, etc. If you aren't going to be installing boards for an extended period and only for a weekend or so, I would rent a plunge saw because they do wear down the tools quite a bit.

Ok, thanks for the tips. Can you/are there blades for a DeWalt table saw? How clean is the cut? If you are cutting strips, are the cuts as clean as when you cut solid wood with a freshly sharpened carbide blade?

 

[Snickarkirre]

Hmm I actually don't know, but it's probably there if you bother to look around. However, it's likely to create a hell of a dust cloud if you manage to get hold of such a blade. But if you're outside and wearing a mask, it should be fine. I think the cuts will be similar whether you use a table saw or a plunge saw. But the cuts will at least be nice if you use a plunge saw and a guide rail. Do you want razor-sharp edges or a small chamfer? It can chip a bit, so if you want razor-sharp edges, I recommend cutting the board upside down if you're using a plunge saw. The advantage of a plunge saw, as mentioned, is that it's easy to adjust the board/strip against, for example, corners if they're not perfectly plumb. The advantage of a table saw is if you're going to cut a lot of strips of the same dimensions, which it seems like you are?

 

[witten]

Ok thanks for the tips. Is it possible/are there blades for typ dewalt rip saw? How good is the cut? Let's say you're cutting strips, are the cuts as clean as if you were cutting solid wood with a newly sharpened hm blade?

It's such a soft material that the cuts are nice almost regardless of which blade you use. A wood blade works but it will be worn out after a few hours.

I found a fiber cement blade for the miter saw on Amazon, not available in any Swedish stores.

Other tips are stone saw blades for the jigsaw, diamond saws for the multi-tool, and a handsaw you don't mind sacrificing. It's also possible to score and break fiber cement.