NorskeTools NCSBP282 7-1/4 inch 4 Tooth Polycrystalline Diamond (PCD) Hardie Fiber Cement Saw Blade

I needed this for an old siding job. Had to cut old asbestos shingles and new fiber cement replacements. Worked really well on both. Left clean edges.

I put one of these on a 20v DeWalt XR Circular Saw to cut some Hardie Backer and let me tell you that using this blade this is a million times easier and more accurate than scoring and snapping the board, and it doesn’t seem to be any harder on the battery than cutting 3/4” OSB or 2x6’s. The 8ah battery had plenty of power to make multiple full length 60” cuts and the blade held up very well. It does generate a ton of dust if you’re using it to cut backer board, so definitely consider doing it outside and misting the board with a hose before making the cut and wear glasses and a respirator. Huge time saver for me though and worth the mess and I was really impressed with how well it worked on a battery operated saw.

No problems so far. Using it to install Hardie Plank on the house. Cuts well

I cut a lot of Hardie board cuts good but still occasionally chafing of the front appears , but in general happy with the blade it’s made over 1000 cuts so far

I saw a number of negative comments about this blade and they almost put me off buying it. I’m glad they didn’t. I bought this to cut Hardie board 0.42”, which is extremely hard to cut cleanly by scoring. I installed the blade in my table saw and connected my shop vac to suck the dust and I have to say that this blade did a great job. Very clean cuts. In fact it goes through hardie board like a hot knife through butter, but in fact it never got hot. Maybe the other negative reviews are due to trying to cut siding, I’m not sure. I would highly recommend this blade. Really enabled me to make precise cuts for my wall installation in my basement.