I'm struggling with an upgrade I made to my Creality CR-10. I upgraded the extruder to an E3D V6 hotend. The extruder mount and cooling fans are installed and working, however, I'm doing something wrong with installing the bowden tube into the hotend. Inevitably after I print a few layers, the extruder jambs and the issue is always the same: the bowden tube has backed itself out a few tenths of a millimeter, and the filament has mushroomed into the vacant space and hardened so that the filament cannot go forward or backwards.
I've tried several things to fix the issue including:
- Trying various pneumatic fittings from various suppliers
- Recutting the end of the bowden tube to attempt to make it more flush
- Replacing the bowden tube
- Three different E3D heat-breaks from different supplier
- Various ways of inserting the bowden tube including: pushing it after the fitting was screwed in, pushing it into a fitting that was back out a couple turns and then screwing the fitting in
The only thing that has (partially) worked was when I would ductape and hot-glue the bowden tube into the fitting so it couldn't back out. However, since I'm still tweaking things, I inevitably have to disassemble things and I'm back to square one.
I'm trying to figure out what mistake I am making to keep causing this issue. As an example, originally I used the pneumatic fittings wrong and thought I was supposed to pull the plastic part out to release the tube, rather than simply pushing it in to release the tube. (Needless to say, I wrecked a lot of fittings that way.)
What else might I be doing wrong to keep causing this issue? What are other culprits to this issue happening repeatedly? Are there firmware settings that may help (or be aggravating the issue)?