Heart key for cymon's mini geared heart

thingiverse

A google sketchup file of cymon's awesome keyed heart gears keychain key. Someone smarter than me can use it to print the key at a higher infill, separate to the gears, which they might choose to print at a lower infill. I printed my original plate at 30% (I think) infill, and the resultant key wasn't up to the task, although the gears printed with a high degree of awesomeness. Instructions ATM I don't know how to export STL's from google sketchup basic, and I don't have the $ for pro, so it's an .skb atm. Any ideas how to export as an .stl would be great. pro tip: cymon's original heart gear plate has 42332 polygons, apparently that's alot.