About this 3D model

Hi all! Because certain issues when printing bridges and problematic areas with my Leapfrog Creatr I decided to design a colling system for the printer´s nozzle. An add on is the increased printing speed. I needed about 6 versions (someones with sub-versions) but finally I´m happy with this final design. This design can use a 50x50mm fan or a 60x60mm one, I´ll suggest a 50x50mm one (easy to find over ebay, I bought this one "Delta AUB0512HB 50x50x15mm 5015 DC 12V 0.15A Brushless Fan 2-pin 2510 Connector"), but there is a choice to use a 60x60mm kind, but it will crash a little with the right rear stepper. I also added in both sides holes to insert a couple of 5mm leds so we can see better the printing area :D