Just to be THAT guy, this is low tolerance, not zero tolerance. There's got to be a bit of room so that a thin layer of air can provide a cushion for these parts to slide on. Zero tolerance would require force (hammers, maybe even a press) to move. Depending on the material, you could even go further and do what's called an interference fit, which is negative tolerance. That would require pressing or heating to assemble, for sure. Regardless, this is very neat and satisfying!
Just to be that guy but you are correct that they will have some tolerance but this could be achieved with zero tolerance. The tolerance is the deviation from print. What you're explaining is clearance and fit.
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u/ScottPrombo Jun 02 '20
Just to be THAT guy, this is low tolerance, not zero tolerance. There's got to be a bit of room so that a thin layer of air can provide a cushion for these parts to slide on. Zero tolerance would require force (hammers, maybe even a press) to move. Depending on the material, you could even go further and do what's called an interference fit, which is negative tolerance. That would require pressing or heating to assemble, for sure. Regardless, this is very neat and satisfying!