Configure for 2.85mm Filament
Does anyone have any reference to guide me through upgrading one or two of my Nextruders to run 2.85mm filament?
I inherited around 30 spools of 2.85mm filament. I’d like to convert at least tool #4 to run the larger diameter filament, maybe tools #4 & #5 both since it looks like the runout sensor will need replaced on the right side for the larger diameter filament. I’m looking for a plug and play option, and will entertain the idea of complete Nextruders so I can fairly easily swap back to 1.75mm when needed.
Thanks.
RE: Configure for 2.85mm Filament
I don't think that's possible.
Formerly known on this forum as @fuchsr -- https://foxrun3d.com/
RE: Configure for 2.85mm Filament
Yeah nextruders don't come in 2.85. I sort of doubt prusa will do one either. You are probably looking at something completely custom.
RE:
I haven't done it yet, but I have been thinking about this for sometime now, and this is what I've come up with as to what needs to be done:
- Get a v6 nozzle and a bi-metal heat break that's 2.85mm compatible with M6 threading so they can go into the existing heat block (easily obtainable from a variety of sources). The reason you get them separately is because you have less to lose if you mess it up.
- A piece of steel (or better yet, titanium alloy) tubing that's got 3mm ID from a hobby shop,
- Drill out the heat break's throat diameter so the tubing can be jam it into it using hot-cold interference fitting. There's not a lot of tolerance here so probably need a drill press to be steady and straight.
- Check the Nextruder's heatsink to see if it'll fit the tubing, it looks like it might be possible, entirely up to the OD of the tubing. If it fits, we can just stick it in. If it doesn't fit, then then the heat sink will have to be drilled out. If you have to do that, you'll need a 2.5" long 4mm drill bit... I have no idea where you'd find something like that and this might be the thing that'll stops this whole thing from working.
- Adjust the tension on the extruder clasp and let out however much is necessary to fit the new filament diameter (I tried it, it does seem to feed properly)
- Then tweak and tune the feed rate, print speed and filament settings in the slicer to adjust for new filament