Very stub page, please clean up with pretty formatting! Mediawiki formatting is easy, just look it up.
Workflow for 3d models, mentions craft robo but should work for SCAL or MTC too: http://digitprop.com/2011/05/from-blender-to-pepakura-to-corel-draw-to-craftrobo/
Open-source cutter driver: http://sourceforge.net/projects/licut/
If/when it breaks, we'll need this info: http://everhack.blog.atxhackerspace.org/2012/02/08/cricut-repair-info/
ATX Hackerspace has a cricut and lots of info here: http://atxhackerspace.org/wiki/Cricut