I highly recommend updating the Melzi board to something which can fit on full-featured Marlin, features like autoleveling will make a huge improvement to your experience. Something like a RAMPS, RUMBA, Duet, RAMBO. Refer to the RepRap Wiki for a list.
Remember to come back and post what you've printed as Make.
It's good for the designer and the community (that means you)!
To post a Make, come back to this Thing and click Post a Make.
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and the Apple App Store.