Geeetech A20M Hot-end Backplate and Parts Cooler Combo

thingiverse

I was having a problem with hot-end 0 completely clogged, even after it was unclogged, it was never the same, still under extruding, and always chasing stringing. It was going to take months to get one from China, so I went with an aftermarket hotend since nobody makes anything aftermarket for Geeetech (at least for this). Here's where we are: I designed a back plate that bolts right up to the A20M. I also remixed the parts cooler to fit with a 30mm and a 40mm fan version. -Update 10/30/20 I started printing with carbon fiber PTEG and found it is a lot stronger and higher heat than carbon fiber PLA. I know there have been some people stating that the parts cooler can break easily, but I personally haven't had much of a problem with that (I did have a print go south and catch an arm and break) but I have not had an issue with it and I can see how that can happen so I do suggest carbon fiber PETG filament for the added strength. I have also changed my parts cooler fan to a 24V 40X10mm to a 24V 40X20mm to get a little more airflow. Overall, I have been printing with this setup for a while now and love the setup! -Update 2/20/20 - I added a 40mm Fan version of the parts cooler. -Update 3/8/20 I added spacers for the top screws of the hotend. -Update 3/15/20 I updated the backplate, spending a little more time with the cutout in the middle for the fan. https://www.amazon.com/gp/product/B07WWT9SXM/ref=ppx_yo_dt_b_asin_title_o01_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B0084ZNAU0/ref=ppx_yo_dt_b_asin_title_o05_s01?ie=UTF8&psc=1 https://www.amazon.com/WINSINN-Hydraulic-Bearing-Brushless-30x10mm/dp/B087TBB8YV https://www.amazon.com/gp/product/B07WFL6944/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B07RFC8KNX/ref=ppx_yo_dt_b_asin_title_o03_s00?ie=UTF8&psc=1 Print settings I used S3D with .1200 layer, 100% infill, with supports. I found that a 20% rotation back helps and add supports to the front fan area. I added pictures. I do have to say the print quality is insanely better; no more stringing at all! Also, note this hotend is not mixing just two colors; I never used mixing anyway. Bigtreetech also makes a mixing hotend that should bolt up to the backplate but the parts cooler is untested if someone does try with the mixing hotend let me know if it works please. You will need a few M3 screws and M3 nuts (I apologize, I don't remember all the sizes; Ace hardware is your friend for that). Also, you'll need 3X 24V 30X10 fans or 2X 30mm and 1X40mm fan for the parts cooler. I do suggest the 40X20mm fan version for the parts cooler.