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Installing the 3D Printed Impeller Replacement
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It is important for the 3D printed part to fit properly. Tolerances of the design error on the tight side.
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Check that the burr drive pegs fit the holes of the conical burrs. If it’s too tight, apply a small amount of sanding to the impeller and you’ll be in good shape.
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Do not sand the flat part of the center hole. Only sand the curved part slightly if needed. The flat part takes the most stress from the drive shaft.
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The gap here should be small with the new part. If it's too tight, you can sand the edges slightly.
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Here's a video of the fit-up with the Shapeways printed part.
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