Filament-Cutter Ender-3 (Creality)

Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4724991.

Yet another remix...

of my Filament-Cutter. This one is explicitly meant to be used on a standard Ender-3-Pro (Creality) stock hotend.

Please notice: I'm using a MicroSwiss All-Metal kit (for better printing results) and the cutter was designed to match that. If you're still using a stock Creality hotend, you have to replace the fitting that screws on with some kind of collet.

Also: The spacer (the part that screws onto the carriage) will move your hotend about 17mm in Y-direction, so you may adjust your printbed size / offset accordingly.

I moved from the previously installed V6 hotend back to (more or less) stock hotend because of I felt the urge to reduce the length of the purged material (this is a drawback of using the Filament-Cutter). Due to the different sizes of hotends (and of course the slightly larger size of V1), I was able to reduce from about 200 mm down to 95 mm to avoid color bleeding and get nice color transitions (here's a video on that).

So far, I'd say the Filament-Cutter is the right decision to use. Although it wastes more filament because the cut-off remains in the heatsink/heatblock/nozzle until it gets purged out by the following filament, it makes tool swapping a lot less frightening (because of jams in the tube/heatbreak, which you have with bulged filament coming right out of the nozzle) and a lot more smooth and faster.

The BOM is mostly the same as in the Filament-Cutter V1 (except a couple of additional screws / bolts, which I'm sure you have lying around). For the MicroSwiss All-Metal hotend you'll need a 23mm long PTFE tube into the cutter.

STEP file is included.

UPDATE 1

Created a more stable junction between the Cutter and the Servo-Mount. You now need only one M3 x 30 mm bolt and nut to keep it in place.

UPDATE 2

Made the Servo Mount a bit more stronger because the previous broke during operation due to the high forces. I've also modded the Cutter base, which now is able to be combined with the 5-Way splitter I've designed. For those who don't use the splitter, there's an adapter for the standard M6 fitting included. Keep in mind: The adapter thread is left handed!