Solo Ender3 -Pro -V2

thingiverse

Check End of Page for UpdatesNote - This Solo Dual Fan Duct Hotend Cover for the Ender 3, Pro, V2 printers is designed to work with a variety of hotends, including the stock, Micro Swiss as well as the new Creality Spider 3.0 All Metal hotend, among others with a similar overall nozzle height.After designing the Ender3 V2 Neo Hotend Cover, I got to thinking maybe this would work for the older Ender3, Ender3 Pro and Ender3 V2 printers as well. I was able to use Neodymium magnets to hold the cover in place this time. Instead of using various backplate features for mounting the parts, which are different for each of these printers, I used the Hotend mounting posts to locate on, which are the same for each of these printers. I created a mounting base with four 6x3mm magnets that is secured behind the Hotend. The Hotend Cover has an additional four 6x3mm magnets to secure it to the mounting base.This Hotend Cover is different in function from my original Ender3 Pro and V2 design, in that it does not completely isolate the hotend fan from partially cooling the part. The original design is intended to be able to print ABS and ASA parts that require no part cooling. Since probably 95% of the people using these printers do not print with ABS or ASA, this new design is meant to be a much simpler and more innovative approach, as well as having far superior part cooling capabilities.I added a small wire retaining loop inside the housing to help direct the 5015 Blower fan wires inside the housing. Also, I added some side venting to allow for better air flow for the hotend fan. The housing is sized to fit either the standard 4010 hotend fan, or a 4020 double thick hotend fan.If using a 4020 hotend fan, use M3x22mm panhead machine screws. The 5015 Blower fan can use either a single M3x20mm or M3x22MM panhead machine screw. The Neodymium magnets are 6mm diameter by 3mm thick. Here are the magnets I used, https://www.amazon.com/gp/product/B08M3YP56J/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1 This is the 24V 4020 Hotend fan I used, https://www.amazon.com/gp/product/B07S9Q3FHW/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1 Or this one should work as well, https://www.amazon.com/WINSINN-Bearings-Brushless-Cooling-40mm20mm/dp/B08R9HHYF7/ref=sr_1_2?crid=BR17BTP7BW4L&keywords=4020%2B24v%2Bfan&qid=1699200985&sprefix=4020%2B24%2Caps%2C144&sr=8-2&th=1Here is the 24V 5015 Blower fan I used, https://www.amazon.com/gp/product/B09W5NHLDV/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1. The Neodymium magnets should be glued in place on the housing as well as the mounting base. You can use gel type super glue, or a contact adhesive like Gorilla Clear Grip. If using contact adhesive, be sure to let dry for several hours before using. Be sure the magnets sit flush in their pockets. I made the pockets about three thousandths oversize, so they should just drop in place, but if anyone experiences a fit that is too tight, let me know and I can make them even larger. Be sure to align the magnets polarity correctly.UPDATE 1 - In anticipation for Direct Drive use, I have updated the part files with a larger opening on top of the housings, for wire clearance. Also I changed the CRT-BLT tab to the side to allow for Direct Drive attachments. UPDATE 2 - I uploaded a 3mm spacer for using M3x25mm machine screws with a 4020 Hotend Fan. Since a 25mm long screw is much more common than a 22mm screw, this spacer allows using the longer screws in place of the less common 22mm screws.UPDATE 3 - I made a change to the part cooling ducts to extend them rearward as much as possible. This should allow for better airflow to the rear as well as the front side of the part.