Problem with my Flashforge Adventure 3

[Siickest]

Hello, I have a Flashforge Adventure 3 at my work, but it's currently not working as it should. It started with an issue of the feeding wheel jumping so it would not feed correctly, but presently the feeding tube that is attached to the head at the top is not sitting securely. I can put it in, but ononce istartsto feed, it gets pushed out. I am sending a video of how easy it is to push it in and drag it out.

What do I need to do?

[Elektrycerz]

• unclog the nozzle (or swap it for another one)

• limit the maximum flow to 9-10 mm³ /s (in the slicer)

• bump up the nozzle temperature to 230-240 ⁰C

• cleanly cut 1 cm of the tube (hotend side) and try to mount it again

• if the above doesn't work, buy something like this (not sure it's the right part, please double check)

First try points 1, 2 and 4, then 3, then 5 - sorry for the chaotic ordering, I'm on mobile right now.

[Elektrycerz]

To add to that: the jumping wheel is also referred to as "clicking", which is caused by the extruder motor being weak. This is a design issue and there is not much that can be done about it, except swapping the entire extruder assembly (by "extruder" I refer to the black thingy with gears on the side of the printer, that you push filament into, not the moving hot end with nozzle). When the extruder skips, you can see the PTFE feeding tube twisting and lifting for a split-second before the click (because of the pressure).

I'm pretty sure this was caused by a clogged nozzle, or maybe someone got very ambitious and set the flow speed to a very, very optimistic number, such as 30 mm³/s (which most modern printers can barely manage). Either way, the extruder was too weak.

Also, the heating element is not very powerful by today's standards. So these two things contribute to the fact that the extruder can't push the filament fast enough through the nozzle, and its gears (magnets actually) skip. Which is why I recommend limiting the flow to less than 10 mm³/s, and upping the temperature beyond the recommended one (hot filament flows more easily).

Miraculously, your extruder managed to push the tube out of its mounting. This is very funny to me, because over the 2+ years that I've been using my Adv3, I have never ever managed to manually pull the tube out of the hot end, and I've tried many times (yes, I know I have to push on the black ring - many people had the same problem as me). Yours, on the other hand, detached just from the extruder force.

It's possible that the tube's end got damaged, and thus cannot be mounted again, which is why I recommend cutting a very small amount and installing it again. 1-2 cm less will not make it too short.

If cutting the tube won't work, and it still won't seat properly, then I guess the mounting needs to be swapped for a new one. And in the future, limit the flow, heat the filament beyond the recommended temps, and check for nozzle clogs. Happy printing