Tool: Carbide Cement Board Cutter.
This is a great tool for a miserable task, cutting Cement Board. My first experience with WonderBoard® was far from wonderful. Even now that I’m fairly proficient with this material dealing with it still sucks. It’s hard, it scratches, it’s heavy and it’s difficult to cut. I don’t mind putting a diamond blade in a skilsaw to cut cement backer board but no matter what, I’ve got this nondescript double sided carbide tipped cutter “knife”. Scratch through the fibers, score the concrete board, crack like sheetrock. Good Luck with complex cut-outs.
[rating:90/100] – This tool got a good rating simply for existing and for being very dangerous.
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Carbide Cement Board Cutter