I just measured mine with my micrometer and it looks like they sit just a hair under 4 mm over the aluminum bed so they may stick up over your 3 mm plates a tad.
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I just measured mine with my micrometer and it looks like they sit just a hair under 4 mm over the aluminum bed so they may stick up over your 3 mm plates a tad.
that's what sanding tools are for :-)
or the z height adjustment on makerware :D