50mm blower for makerfarm direct drive extruder
youmagine
The bracket and duct enable the use of a 50mm blower (http://www.digikey.com/product-search/en?vendor=0&keywords=603-1370-ND) as a cooling fan. Centrifugal blowers can push against higher pressures (small openings in cooling ducts) more efficiently than axial fans, and therefore allow for better cooling. This translates into better overhangs on parts (see overhang test image). This is compatible with the e3d v5 hotend and the direct drive conversion here https://www.youmagine.com/designs/makerfarm-direct-drive-extruder. Installation: 1. Attach blower duct to blower bracket using three #3 screws, taking care not to overtighten them. 2. Connect the blower to the bracket with two #8 screws, again avoiding over-tightening. 3. Align the hole on the blower bracket with the corresponding hole on the extruder body and insert an M3x35mm (or longer) screw. Firmly tighten the M3 nut onto the screw.
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