Cobra - Rear mounted cooler for Wanhao Duplicator i3.

thingiverse

EDIT - 20.12.2016 This cooler remains incredibly popular, even with new updates. I have modified the license to enable others to easily adapt it to suit their printer designs. EDIT2 - 29.11.2015 The design has been updated once more, featuring increased volume in the ducts and wider spacing between exhaust openings for improved airflow. Despite these changes, I'm hopeful that performance will remain consistent with its predecessor. EDIT - 29.11.2015 A brand-new design features a blower orientation designed to better navigate around obstacles, along with added supports for easy mounting. This new version requires fewer support materials during printing and boasts walls that are slightly thicker than before but not quite as robust as the "fat" version's walls. EDIT - 31.10.2015 I've added an extra duct with significantly thicker walls to combat issues encountered when printing other designs. Use this alternative if necessary, especially if you experience trouble with the initial cooler. EDIT - 27.10.2015: To demonstrate the superior performance of my cooler design, I have included a photo showcasing my very own 70-80° overhang test on Thingiverse. Notably, the design performs consistently across all four sides without exception. Furthermore, an optional offset mounting hole is available to ensure accurate alignment with the nozzle. EDIT - 26.10.2015: A revised and enhanced version features ducts with smoother designs for improved airflow toward the rear. This cooler has undergone significant upgrades for superior performance on challenging tests such as the Atom 80° Overhang challenge, where it exceeds any comparable design to date. Capable of cooling 50x15mm blower fans with unmatched precision, this robust cooler eliminates all obstructions obstructing view from above. It delivers air blasts with optimal efficiency from both sides without impeding heat dissipation from the nozzle and achieves uniform airflow in its vicinity. Positioned at the lower left hole of the printer's bearing block makes installation quick and straightforward. For optimal performance, consider substituting plastic bearings with the modified ones on Thingiverse (1172838). Not only do these new bearings dramatically lighten your entire system but they also alleviate thermal stress associated with long printing periods. In cases where you want to utilize your existing bearings without making major changes to the printer design itself - stock M4 tap should work just fine; if tapping holes isn't necessary however feel free to merely install it temporarily for ease in adapting the parts together efficiently. As well as adding minimal support during operation which could lead unnecessary overheating; you won’t even need access into this small component part by performing slight changes manually since originally there was likely an empty hole without any metal inserted within – which results great printability. Since printing requires less technical know-how today mounting isn't a task demanding much more advanced skills now compared against last week let alone what might've needed previously back during early beta versions days - although we do acknowledge occasional modifications sometimes still must apply; feel at home making them should they not fit exactly same way mine did – and go ahead make some small changes accordingly until you find solution perfect. Required: - A single, reliable 12V DC fan operating with maximum airflow rated 50x15mm in size preferably but not strictly necessary a high quality one however still suitable here’s very cheap yet working alternative: https://www.banggood.com/DC-12V-2-Pin-0_13A-50mm-Brushless-Turbine-Blower-Cooling-Fan-for-3D-Printer-p-1146208.html?p=HD240528697332015103 Two other small components necessary - one screw M4x10 to securely attach blower directly onto metal body which connects them all nicely placed underneath there another shorter sized also quite longer type being an 12mm fastened together via additional M4x20 part used mainly inside – handy combo set up: https://www.banggood.com/Suleve-M4CH1-M4-Carbon-Steel-Hex-Socket-Cap-Screws-Bolts-Nuts-Assortment-Kit-250Pcs-p-1210779.html?p=HD240528697332015103 Printing Details: *Raft Support Options: - Unnecessary. Supports Options for print setup: *Supports Needed Only If Bed Overhang is Subpar:* Printing Infill Rate Requirements and Resolution Levels Required: - Choose Any Fill Level Possible With Printer You Possess, Zero Percent Was My Test Choice So Be Aware Your Choices Influence The End Results Ultimately. The Following are Things I Suggest Doing or Trying out To Further Ensure A Perfectly working printer Note: Print in any available filament material you choose; using materials other than PLA is safer when at elevated printing temperatures, however this still does not impede effectiveness – but does pose extra risk for burn-in issues possibly during heat buildup conditions during longer continuous operation periods as a whole unit.