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Tips:
1) you can rotate the part in Repetierhost, so you can put the appropriate side down on the build plate.
2) For the main printer block I usually print the part lying on its side, with the stepper motor mount side down on the build platform. Depending on your settings you should be able to print it without any support, and only have minimal cleanup.
3) if you do use support, you can adjust the support settings to minimize it- make a longer distance between supports, etc.

good luck!