K40 laser cutter air assist fan duct
thingiverse
Made this tiny duct for a friend's K40 laser cutter/engraver (27mm opening) and efb0412vhd delta fan they had lying around at their awesome new maker space (www.treasurecoastmakerspace.com), hopefully it'll help you too. It's not absolutely ideal, as the fan is so powerful it seems to recycle smoke a little bit, but stronger cross ventilation should solve that problem. I've also uploaded the fan model I made, just for fun. Let me know how it works out for you! Print Settings Rafts: No Supports: Yes Resolution: 0.2 Infill: 15 Custom Section
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