Came across this video searching for k2 content:
Any1 know if this fixs the coupler going bad on older design?
Will creality replace with new design if you hadn’t had issues yet?
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Any idea if the revised extruder has a more easily replaceable PTFE connector ? or one that is less prone to breaking ?
On the Ender 3v3 variant of the extruder the connector its held in via a screw, so easily replaced, not so on the Original K2 version.
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You can remove it by force as it just press fit and buy replacement similar ones. A better strain relief on ptfe will improve the life, there plenty of mods you can print or use one or community mods to use pc-m4 / m10 ones.
yes, have done that… contacted Creality support when the replacement turned up under warranty to ask what they recommended to prevent happening to replacement, their answer was just the strain relief from their wiki 3D Printer Files | 3MF File | K2 Plus Extruder Bowden tube protector/fix | Creality Cloud
which i’d already printed, as well as an M10 one while waiting for the replacement part… now using that “broken” front cover for printing TPU instead of repairing it…
was more asking if they plan on a revised extruder similar to the Ender 3v3 extruder front cover where the connector is held in place by a small screw so its very easily removed/replaced.
I’m not having any problems with my extruder at the moment but every now and then I buy a few spare parts to have on hand just in case and yesterday I happen to order an extruder. Will find out how different it is when in arrives next week.
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What’s confused me, is the YouTube videos comparing new to old mostly focus on the metal inserts in certain hole locations to identify old vs new…
However what came with my K2, matches the “new”, and it’s 6 months old.
So either Creality started shipping K2’s with the new extruder quite a while ago before the extruder was released to the public, or the vid’s are not correct at identifying the differences.
The only physical difference I can find is the blue lock glue over the filament detector spring, which is on new and missing from my original front cover.
I’m on the old extruder and have ongoing problems with the PTFE tube where it attaches to the extruder. The Creality strain relief helps a little. I’m having a bad search day. Could you link me to the community mods to use pc-m4 / m10 ones?
THX
There are many, but these 2 i personally printed and used for a while, so know they work
The strain one is more for protecting a working front cover extruder connector… the above is for when its completely gone and doesnt hold ptfe any more
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Thanks! The bottom one is the one I use. It helps a lot, but the Bowden tube keeps wearing out at the top junction.
This pix is with the strain relief removed.
Ever with the strain relief in place It looks like the Bowden tube is getting heat and friction damage. Note how the tube bows in just above the attach point. Also curious that the hole is on the inside of the curve, as if it was actually caused by the strain relief plus heat.
I’m wondering if the revised extruder diverts more heat away from the Bowden tube junction.
You’ll find the link in here (as well as other places)
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Nice document! Thanks.
It’s probably a number of things…
Blobs of the end of the filament being dragged back through to the CFS, heat, angle…
Actually all the more reason to use the photo above with the red print…as that has an m6/m10 higher up and provides a longer “straight” run to the gears… so should help prolong PTFE, and the connector is easily replaceable.
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Im on No 4 of this part im now going to try replacing the ptfe tube connector with a better one. I have had my K2 for 5 months.
I’m busy trying to learn f360, as I know what I want but haven’t figured out how to draw it..
what I want to build is a modified version of this:
with the ptfe spacer-insert, modified as a 2 or 3 way splitter, like this without the need for M10’s or M6’s, to reduce the height..
the idea is that I’d be able to continue to use the CFS via 1 splitter and have the other always there to easily / quickly insert side spool filaments without having to pop off the PTFE tube all the time, thus not chewing up PTFE tubing quickly by repeatedly swapping out PTFE between TPU printing vs normal printing, which i’m doing (or swap out extruder front cover)..
any f360 experts out there willing to design that for me ? i’ll get there, it will just take a few days, someone who does this day in & out could probably do it in 5 minutes.
Insert mesh, tick, convert to body, create component tick, create sketch of a curve tick
What i cant get working is extruding or sweeping along the curve to join or new body… to make a splitter…
Doing away with the need for these 2 im currently using
