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Reinforcing 3d prints without crazy infills

Love this idea

Think about what happens if, in the CAD system, you subtract a thin cylinder (say 0.5mm in diameter) from the interior of a part to be printed. When the part is sliced the slicer will surround the cylinder with solid material automatically, making it like a length of strong fibre embedded in a weaker material (the print's infill).

#3dp 3dp (x)