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Do twin-blade / Twincutter circular saws produce a more accurate cut than regular circular saws? Do they have less kick-back? Do they reduce the tearout / splintering / chipping at the rear of the cut, compared to regular, single-blade circular saws? I'm looking for real-world experience, as I've seen countless sales-pitches on the matter.

The Twin-Cutter circular saws have two circular saw-blades spinning in opposite directions. It behaves similar to a regular circular saw, except with a slightly wider kerf (since there are two blades), with aparent benefits. Here is a sales pitch video on YouTube

Some additional articles which I find inconclusive:

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More waste as sawdust would be the general rule of thumb. –  Fiasco Labs Oct 8 '13 at 15:01
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I think the real place where this tool is useful compared to a traditional circular saw is for plunge cuts. I can't imagine where this would outperform a regular circular saw for a non-plunge cut unless you had tight access that a smaller twin blade could get into.

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