[CR10] control box 120mm fan holder optimised

thingiverse

Print the V1 file and one "front feet" to get a good airflow in your control box and remove a lot of noise. One fan or two, I prefer two for better airflow.\r\n\r\nDon't forget: your warranty will be void by doing this mod.\r\n\r\nI had already put some 60mm noctua fans in my control box (to replace the 50 and 40mm), cut all the crap in front of the fans, and put the power supply fan in intake. But it seems that the power supply still needs a bottom fan full power 60% of the time. Which I don't like because of the obvious noise it makes.\r\n\r\nThen I found a Corsair PC power supply in a garage sale, (it wasn't working but was totally new and without dust !) took the fan, played around with it, and saw that it was VERY powerful (12V 330mA).\r\n\r\n2h later I was heading to my favorite website for 3D printer parts, searching for a good fan holder, but no one was interesting to me.\r\n\r\nAs a student, I have a free SolidWorks license so I made my own holder !\r\n\r\nfeatures : Quick and easy print (<4H for me), airflow is as good as possible (area of a 120mm fan : 11 300mm², area of the clearances under the holder : 8000mm²).\r\n\r\nI didn't have time to test it, it's printed but not tested. (EDIT : now tested, read below)\r\n\r\nThe idea is to print two holders, remove the metal plates from the bottom (power supply + bottom of the control box), and install one or two fans.\r\n\r\nI would plug the front fan into the power supply (to power it only if needed).\r\n\r\nTo cover the hole between the two holders, I suggest using electrical tape (not recommended) or aluminum foil covered with kapton tape. It's non-flammable and electrically non-conductive.\r\n\r\nA good addon could be to glue some pieces of rubber under the feet, to dampen some vibration and add some grip. From a bike inner tube? Maybe it's a good idea.\r\nSolidWorks file provided ! (some holes were covered because no need and ugly to print because of the high angle)\r\n\r\nEDIT : The holes where ugly but the print time was faster, I will make a V2 with more holes in the walls to speed up the print. Actually it's a 5h30 print for me (30mm/s and 45mm/s infill) Sorry !\r\n\r\nEDIT2 : Tested ! I put an Akasa fan I had laying around, and the airflow was absolutely amazing but a bit loud. I used only one fan, one foot, and some old prints to support the front of the control box.\r\n\r\nI've replaced it with an old but not used Noctua NF S12-800 (which stands for 12cm, 800rpm at 12V). I was worried about the airflow because this fan doesn't push a lot of air...\r\nBut now it's in place, and the airflow seems to be just enough. 30min of printing at 208°C and 60°C for the bed didn't turn on the power supply fan (I left it near the power supply just in case... not screwed because all the bottom plates are removed)\r\n\r\nThe fan produces 8 dB as the manual said. I can hear the power supply switching power so... Yes it is REALLY quiet and I can't feel any hot spots on the control box.\r\n(photo added, the version you can download is a bit better, I still need to make a "quick print" version)\r\nI will also add 2 simple feet if you only want to put one fan, to support the other end of the ctrl box\r\n\r\nLAST EDIT : new files were added ! Feet and V2 "quick print" with an improved airflow. You can remove more material if you want, but my work on this is done. Good luck !