HE3D K200 HotEnd Assembly

thingiverse

NEW VERSION FAN DUCT..............................\r\n\r\n\r\nHE3D K200 is a delta that outshines the 'standard' kossel based machines in several ways. As for the kossel, I use the mini kossel as defined here (https://github.com/jcrocholl/kossel) as the standard reference.\r\nFirst, the distance between the rods is 42 mm, a significant improvement over the 40 mm on the kossel. The other notable difference is the reduced distance from the towers to the build platform. This means you need to keep all hot end accessories close to the effector for maximum build volume.\r\n\r\nMy requirements:\r\n1- E3D V6 hot end\r\n2- Autolevel - Optical Sensor\r\n3- 2 part cooling fans and 1 hot end fan ( for a total of 3 )\r\n4- Minimum loss of build volume\r\n\r\nCredit:\r\nI have scoured the entire internet, searching high and low for suitable designs either to use in its entirety or glean ideas from. Since the K200 has that @#!$ 42mm spacing, my selection of use as-is choices are limited. So, I decided to create my own, using existing designs and ideas. Major design influences are listed below.\r\n \r\nEffector: The E3D V6 Clamp above the effector is a common design element, there is no one person I can point to to thank. Thanks to the entire community for making it possible. I also added a 1mm recess for the z-probe (Autolevel).\r\n\r\nAutolevel: The main design idea came from Thingiverse user wallie for the Z-probe mount with optical switch located here: https://www.thingiverse.com/thing:605729. I heavily modified it to fit, but the concept is his. I also used the footprint for the retractable (z-probe) mount.\r\n\r\nFan Shroud: The basis of the design belongs to Thingiverse user Hatsyflatsy for his Triple fan holder 30mm located here: https://www.thingiverse.com/thing:2459766. Here I modified it for a closer hotend cooling fan and also added the E3D V6 heatsink clip to the piece.\r\n\r\nAll parts were designed in SOLIDWORKS and placed in an assembly to verify alignment. SOLIDWORKS is an incredible tool that makes designing complex parts a breeze.\r\n\r\nParts Required other than the Effector, Clip, Autolevel mount and fan shroud\r\n3- 30x30x10 fans.\r\n12- #4x5/8 sheetmetal screws to mount the fans.\r\n2- 3mm x 16 Socket Cap Head screws (E3D Clip)\r\n2- 3mm x 10 Socket Cap Head screws (Autolevel mount)\r\n2- 3mm x Socket Cap Head screws (Optical Sensor Mounting)\r\n4- 3mm Nuts (Autolevel mount and E3D Clip)\r\n1- 2mm x 10 Socket Cap Head screws (attach fan shroud and effector)\r\n1- 1.5mm washer\r\n1- Silicone Heat Sock\r\n\r\nUPDATE 02/11/2019\r\nMade the following changes to improve the Fan Shroud Only. All other parts remain the same.\r\n1- Made the top (where it meets the effector) 1.5 mm taller so that the washer is not required, and the Diagonal Rod Ball Joints have clearance.\r\n2- Re-enforced the fan outlet duct to the body with larger fillets. One of my outlet ducts snapped in half, which should be corrected by this change.\r\n3- Eliminated the small gap where the heat sink cooling fan was allowing air to hit the heat block.\r\n\r\n-I have lowered my standard fan speed to 50% (was 70% in previous notes) but maximum is still 100 (for bridging.)\r\n-Silicone Heat Sock is still highly recommended.\r\n-Double check your installation at z=0 to make sure the fan duct does not hit the bed.