Parametric Ender 3 / CR10 "volcano" / E3D V6 hotend using stock Creality fans

thingiverse

This is a fully parametric OpenSCAD file to generate the parts necessary to replace the (frankly useless) stock heatbreak and cooling fan assembly on Ender 3 and CR 10 printers with an E3D-V6, AKA "volcano" all metal hotend. My Tronxy P802 and my T1 delta both use E3D-V6 all metal hotends (no teflon just above the let chamber) and switch seamlessly between PETG and PLA with minimal problems. The stock Creality hotend has caused me no end of grief and the parts are more expensive. Also, my older 2 printers are 12 volt, so my spare fans stock is currently all 12v, so I need to use the stock Creality 40mm fans for now. Standardising parts across printers as much as possible makes for easier maintenance. E3D-V6 hotends have worked 100% reliably for me, all metal or PTFE throated, and the view of the reliability of the first few layers is better than the boxy, poorly ventilated stock Creality setup. Hence this rig has a duct (to match a 40mm fan to the 30mm fan housing of the E3D-V6), a bracket and a clamp with a mount for the stock parts fan. A new parts cooling duct needs to be designed, but I have to fit these parts to the Ender, then measure, then print the parts cooling duct as a test. (Photos of that will come when I get to that job.) This is a work in progress, so the SCAD code is a bit "alpha" at this stage, and your parts may vary. No warranty, no commercial copying, give attribution if you remember where you got it from, but otherwise, make it work for you, share your improvements.