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October 29, 2011
reprap needs to be added to the resource links list, but aside from that, the big deal:
“produces dimensionally finished parts +/- 20 µ m over 20mm
with metallurgy equivalent to wrought iron milled metal parts (full strength, >98% density) ”

20 micrometers, if I’m reading that right, is .0007 inches, less than a thousandth. There are only a small handful of things you need more precision for, in fact most things need far less.

Wrought iron is a reasonably useful level of strength–you won’t be building a Falcon 9 out of it, but it is also a good start.


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