MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.

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Hi Bob, Two things spring to mind. Check your filament diameter with a digital caliper and check it matches the measurement entered in Slic3r. Or you could just override the feed-rate to 110% or more in the Repetier Host. The second thing is to switch to a smaller nozzle. 0.4mm or 0.35mm will produce much higher resolution prints. For reference I print almost everything with 0.25mm layer height and a 0.35mm nozzle and PLA.