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do you think with the holes in it , it fling more debris ?.
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Ahhh, no Greg. It would not fling more debri as the wheel cutting surface is the same as any solid wheel (even tho it looks different). Debri flinging is dependant on the design of the grinder itself, not the cutter wheel. the cutter guards, the angle of the cutter wheel, all contribute to debri flying around, or the containment of the flying debri.
this new cutter wheel has one design feature that may, or may not, help with grinding out stumps. that design is the see-through feature. No strength is lost through the cutting out of all that metal in the cutter wheel.
Frans