RepRapGuru Cooler Kit
Description
--- Note --- I Learned The Hard Way, When Printing Abs, Turn The Fan Off Altogether. It Was Causing Part Curl At The End Of The Print. --- Update --- I Installed A 10Uf Capacitor Across The (+) (-) Terminals And It Quieted The Motor Down Substantially. For The Heck Of It I Tried A 100Uf Cap, And I Lost The Ability To Adjust The Speed Of The Fan, It'S Like Ramps Wanted To Push The Fan 100% On With No Speed Control. So Somewhere Between 10Uf And Less Than 100Uf And You Should Be Good. Picture Added. ------------ This Is A Mashup Of 3 Existent "Things", The Parts From Which I'M Using As A Print Cooler That Works Well With The Reprapguru Hot End Assembly. Print These Three Things And Add To It A 5015 12V Blower Fan. I Zip-Tied My Clip To The Extruder Motor For Extra Security. Note: This Produces A Lot Of Airflow... Enough To Affect Print Bed Temp And Make The Printer Work Harder To Keep The Print Head Heated. You'Ll Want To Experiment With The Fan % In Your Slic3R Config. I Wonder If A 24V Fan Would Work Better Since It Would Have A Lower Output When Fed 12V. Driving The Blower Motor At ~30% Works Nice, But It'S Loud. I'M Going To Put A 10Uf Capacitor Across The Fan Power Leads To Try And Quiet It Down. Pwm Is So Noisy. ;)
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