My filament is getting stuck in the Y splitter. Two of the filaments seem to slide through while the other two get stuck. Is there something one can do to may the Y splitter less sticky?
(sorry about the choppy video. I need to fix something with that as well. )
See video.
Downloading Prusaslicer now. This project just keeps getting worse and worse.
Here are pics of my filament that is jamming:
The Y adapter is nothing but a tube... there are three points of contact for the filament... the PTFE tube at the top and bottom and the PET material of the Y adapter itself. The inner diameter is 1.8mm... if your filament exceeds that on any dimension, it can jam... or if there is something blocking it. 99.99% of the time, the issue is the filament itself... pull it out and measure it... I saw you were manually messing with it in your video... what does this filament do now? Do you have calipers to measure it? Can you pull the specific tip that is jamming and take some pictures to show it to me? In that .01% chance there is something else going on, you should be able to physically see something that is damaged... look for crimped, bent or misshaped PTFE. As for the temperature thing, I have no idea why Cura is doing that... we do not mess with any temperature settings at all in any of our code, so it must be a setting that is tripping it up. Personally, I don't use Cura for this... PrusaSlicer is light years ahead of them in terms of multicolor support.
Also, why is my filament still getting caught up in your Y? If the filament cannot reliably pass through the Y then this thing is useless. When I bought this your videos led me to believe that it would work, the filament would go through the Y and not get hung up half the time.
I may have screwed up my cura settings but the Y is a part that should be able to reliably work when I feed in freshly cut filament. What do you do to get your filament to reliably pass through your Y? Or are you just hiding all the print failures?
It looks like cura is turning off the hotend just after the tool change:
M117 3D Chameleon Tool T1
M83 ;relative extrusion mode
M104 T0 S0
Why? How have I screwed this up?
Filament 1 loads, Filament 1 prints, filament 1 retracts, filament 2 loads (sometimes- sometimes it gets caught in the Y at the top where it enters, or at the bottom where it exits). then the hotend drops to 0. Why? I followed your instructions for setting up the 4 extruders. I used your website to generate the start/stop gcode and copied that into cura. I'm attaching my gcode if that will help. (Gcode will not upload for some reason)
Also, why does my filament keep getting hung up inside your Y? I cut it at an angle. It seems to only be filament 2 that gets stuck. Do I have to open up the Y again and clean it out? Filament 1 has no string. I reduced the temp to 190.
Also, I want to make sure you used a straight razor to cut the tube and reflared it on the inside if you did cut it. Here's a video where I show the correct technique as well as a demo of what can go wrong. https://www.youtube.com/watch?v=LtBYxefDwPc&t=180s
Did you take it apart? There's really nothing inside of it that would block it unless the PTFE in the bottom isn't tapered on the inside or it isn't all the way into the Y adapter. There is a pocket that the top of the PTFE tube fits in... if it's not seated correctly, it will allow the filament to catch on it. Can you take pictures of that bottom PTFE tube? Also, did you pull out that black piece that was blocking it on the inside? If not, it's possible it's still in the bottom.
https://youtu.be/NqvvsBICYVQ
Maybe mine is defective. When I push a piece of filament through the passthrough, it gets hung up just before the bottom. I can work it through if I twist it while I push, but there is definitely something hanging it up down there. I'll make a video to show you.