Geeetech Al. Rear Mounted Radial Fan Shroud
Description
<B>Update 19 Mar 2017 </B> Some People Complain That The Bracket For The Fan Is Fragile. Redesigned Both The Shroud & Bracket To Give More Strength For The Fixing Area. Also Added A Slot For The Fixing Nut/S And Made The Adjustable Area Bigger. Files To Use Are Fixingbracketv7 & Mainshroudv8Round <B>Update 7 Dec 2016 </B> Added 2 Files - Mainshroudv6.Stl & Fixingbracketv5.Stl. These Files Allow For Two Screws To Be Used For Fixing To Provide A More Secure And Stable Fixing Mechanism. Note: This Shroud May Not Fit With The Original 33Mm Throat As There Is Not Much Clearance With This Throat Between The End Of The X Bracket And The Bed. It Fits Perfectly With Anyone Who Has Upgraded To A 50Mm Throat. When My Geeetech Al. Extruder Throat Got Blocked, I Purchased A 50Mm Replacement. The Original Was 33Mm And Only Geeetech Sold These At A Premium. What This Did Was Give Me An Additional Height For The End Of The Nozzle Of About 17Mm. This Also Gave Me A Bigger Gap Between The End Of The Z Axis Bearing Bracket And The Bed. My Original Design Used A Normal Fan With A Circular Shroud. But Given That These Fans Are So Under Powered The Cooling Was Inadequate. I Read That Radial Fans Gave More Air Output. Also The Design Of The Shroud In Front Of The Extruder, Hid My Nozzle When Printing. To Solve These 2 Problems And Now That I Had The Height To Play Around With, I Designed This Fan Shroud To Fit To The Back Of The X Axis Steel Bracket And Also To Use A Radial Fan. After Much Testing This Is The Model I Have Come Up With And Fitted & It Does Push More Air With Less Noise. This Fan Whine Was More Noticeable Ever Since The Printer Itself Went Silent After Fitting These: Http://Www.Thingiverse.Com/Thing:1798758 The Bracket Is Designed To Allow X Movement For Adjustment And The Fan Shroud Itself Allows Adjustment In The Z Direction So That An Ideal Location Can Be Attained. Since Anyone Printing This Obviously Needs Cooling, And Pla Does Not Behave When Not Cooled, I Also Included A Dummy "Helper" Object. Sketchup Files Included In Case You Need To Tweak The Design.
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