CR30 Bondtech DDX conversion fan adapter kit.

thingiverse

This is a fan duct kit to use a Bontech DDX extruder with the CR30 and the stock hotend (Mosquito should fit as well but not yet tested). You'll need a two 24V 5015 fan that aren't included with the DDX. If you are using the stock rollers on your X-axis you'll need to dremel away a small amount of the DDX housing to clear the bolt heads (don't worry there is lots of extra meat at these locations it won't affect the operation at all.. If you've switch to linear rail on the X-axis you will need to counter sink you 4 mounting bolts on the backing plate.. https://www.amazon.com/dp/B08R9G2VDR/ref=cm_sw_r_tw_dp_7SKCWJCF3JJE9KDBWHEX You will also need to install these new leveling knobs as well for clearance. https://www.thingiverse.com/thing:5193465 5015 fan duct - prints without supports. Cooling Duct Rev1 - will need "Touching Build Plate only" supports.