2 in 1 fan duct with seperate lower nozzle
Description
Acknowledgment For Rvjm21 And Ug1Y For Giving Me An Advanced Starting Point On This As I Had Started From Scratch When I Realized I Didn'T Need To Start From First Principles And Could Build On These. I Found The Original Worked Well But The Lower Duct Was Too Close To The Bed And Knocked The Model Plus It Would Allow Correct First Layer Clearance. When I Saw The Modified Version I Thought It Would Be Just The The Job. I Saw Things I Wanted To Change Though. Such As The Opening At The Bottom Of The Main Duct So The Fan Area Was Totally Covered By The Duct. Some Shaping To Smooth The Flow. Adjusting The Lower Nozzle To Clear The Bed And The Heater Block And A Wider Spread Of Air Over The Model. I Have Since Modified My Design To Incorporate A Cone To Help Remove Eddy Currents Behind The Fan. Haven'T Printed Latest Version Yet I Have Posted Both Models. The Cone One Hasn'T Been Made Yet, Other Has And Is Working Quite Well. Modified Nozzle By Adding A Rib Because The Top Surface Sagged After Printing With Fan Off. Redesigned The Nozzle For A Wider Spread Of Air Flow Over Model And Lowered A Little More Away From Heating Block To Lessen Affect Of Radiated Heat. Also Produced In Pla So Will Be Interesting To See How It Survives. The Petg Version Softened And Sagged A Little At It'S Closest Point To The Heating Block.
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