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Waterjets or lasers should work. Waterjets are noisy and messy. Lasers are expensive. Either could make nice right angle cuts by scanning the business end across the extrusion at an angle, the tangent of which is the ratio of cutter linear feedrate to extrusion velocity. I was thinking of a bandknife, but that would have to be mounted on a 'flying' carriage and reciprocated in synchronism with the extrusion. I wonder if the existing guillotine is 'flying' like that, or would work better if it were. -Mike-
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