I have the Ender 3 V3 SE.
My problems started when I swapped nozzles. The filimwnt snags or gets hung up somehow. I got the upgraded ceramic hot end with the quick swap nozzle but I have the same problem. The new hot end has a tiling that fits over the metal nozzle when it is fully screwed into the hot end and heat brake. The other end fits into the extruder to serve as a guide for the filimwnt. I think the filimwnt is getting snagged on the metal lip or something.
All I know is that it will start out printing fine, and then will just stop feeding filimwnt. I can pull it out, trim it, and stick it back in and it will have trouble getting past the lip, but a little wiggle and it gets by fine and you can feel it melt like it’s properly loaded. It will print okay for a bit, then get hung up or snagged sfain.
I’ve tried adjusting the extruder, changing the retraction length and z hop setting. Nothing has fixed it. my printer is effectively bricked.
I’ve got stuff that people are waiting on. I went ahead and ordered a Bambu A1 because I read that it is more reliable that the Crealty.
But this has me stumped. I’ve got a roll of PFTE tubing and plan to try and replace the stock hot end PFTE tube piece that fits inside the nozzle block. Hopefully that will allow it to print. I’m hoping these issues are being caused by the PFTE tube piece getting slightly deformed on the original hot end.
The ceramic tube has a larger inner diameter and goes between the hot end and extruder. I think that had gotten messed up and might be the cause of rhr issues with the ceramic hot end.
If anyone has any experience with those issues and can offer some sort of a solution or help me to get this dsmn thing working again. It was just fine.
But I’ve taken the cover and extruder off so many times now dicking with this thing that I’m starting to tear up the connectors and stuff from constantly having do unplug and reconnect them. It’s driving me crazy.
Any help is very appreciated.
Thanks.
Hi
When you got the ceramic hotend did it come with new PTFE tubing?
Mine did and there were 2 pieces one for the SE and one for the KE, the length of these is critical.
There have been reports that the internal diameter of some tubing is too small, check my posts for dimensions.
The other potential issue is heat creep, did you apply the heatsink paste to the new heatbreak? this is vital and can cause your issue.
No. I did t. I watched an install video and rhr guy just bolted it on.
I assumed the paste was for if you needed to install. New nozzle.
As far as heat creep, as I said it stops feeding and you can pull the filimwnt out. When I do, the last quarter inch or so is soft, but it would only be rhr filimwnt inside rhr nozzle or just above it.
I am at the point where I’ll try anything. Where are you supposed go apply the thermal paste?
The two tubes that come with the ceramic hot end are different lengths because the SE and KE install at different distances from the extruder. You can see the markings on the hot end where the bolts mount it to the printer head. I assume the KE mounts a few millimeters higher than the SE, hence the linger tube.
The outside diameter is the same as the stock hot end, however the inner diameter is bigger. This allows it to slip over the top of rhr longer nozzle of the hot end, and slip inside the extruder, whereas the stock hot end came with the dual sized tube that slips inside rhr extruded and also inside rhr heat brake of the original hot end. The original uses another tube that isn’t a part of rye design for rye ceramic hot end. The original hot end tube goes inside the hot end nozzle block and serves as an insulator to prevent heat creep.
From what I gather, this tube has to be damn near perfect. Any mar or damage can cause the filament to bind like ice. We. Experiencing.
I have a roll of new tube for rhr original hot end. I plan to trim it to size, Install it, and hopefully it fixes my issue. If not, I’m ready to throw ******* in the trash.
As far as the ceramic hot end, I’m stumped. I took it out of the box. Installed it, and got one print before it started messing up.
I can’t be the first to have these issues. Somebody else has had to have dealt with this and found a solution.