Hello everyone, I’m quiet new to using ams and my p1s.
In the last part of a print job with 4 colors (pla), remotely I noticed poops blocked on top of the funnel.
Is there a mod or a way to reduce the risk of this poop’s accumulation?
Had the same problem last week on my 3-day long print. In my case, my printed poop chute was completely full so the poop blocked the whole funnel.
I had the problem that during this blocked funnel my front cover of the toolhead fell of, i don´t know why this happened…
In my case, the chute was free, but some filament remains attached to the “door”.
Btw, I saw that someone put some adhesive tape to make the zone more slippery.
Ok, i saw on makerworld that thera are a lot of models to modify the chute/funnel. I am wondering if those models would help for this problem.
Happened to me this morning. The chute was clogged up from poops and it piled up exactly as your picture. Luckily, I was watching the print when it happened so when the toolhead cover popped off, the printer paused and I was able to rescue the print. I reached around the back of the printer and manually dislodged the backed up poop. It’s another checklist item now before every print… check the poop chute for blockage…
Why in the world would you just sit there in watch as the poop chute cover fell off?
Did someone find a solution for that problem with the blocked funnel from the poop chute? I have a 20 hour print going on and 5 hours left, emptied the chute in the morning before work, wasn´t even half full but now I have a blocked funnel again, this time as mentioned not from a full chute…
The tip I can give is to wipe down the inside of the chute to remove any stuck on gunk, after that rub some lightweight (~100 cst) non solvent silicon oil on the inside of the chute area above the door and then wipe it off. (Note remove your build plate prior to applying the silicon oil since contamination with it is very difficult to clean, not touching the build plate with silicon oil soaked fingers is also not recommended). This lowers the friction inside the chute and reduces the chances that the hot “poop” is getting stuck to the sides and/or onto the door.
Wow thanks that is a good tip, i never thought of that. I have some “fluid wax” for my bike which prevents dirt to stick on the frame. I could also try that, for my bikes this works great
No experience with that one but it might work,
just make sure that it is “plastic safe” as some wax solvents can result in damage to the surface or discolorations.
Should be not a problem with this wax but I will take a look again before I am going to use it. Thanks again for the reply.
But I have to say, maybe something is wrong with my Bambu Basic White Filament:
The Poop/Purge looks a bit strange (the stringing). Maybe that is why all of this stuff was stuck in the funnel
It might be a bent nozzle.
Had something similar happen to me in the past, where the poop chute clogged, and somehow the printer bent the nozzle. My guess is that the nozzle got stuck in the poop while it was wiping.
After that, the poops looked like the ones in your picture. Note that it printed just fine, even with a bent nozzle.
For checking, I recommend looking at where the purge line is and/or removing the nozzle from the printer. The purge line was in my case very close to the edge of the plate.
Ah that could also be, thanks for your reply.
As you said, my prints are good but I have this issue with the blocked funnel printing multicolor since my 3-day long print a few weeks ago where the poop chute was full and everything blocked back into the funnel.
During this my front cover of the toolhead with the fan attached fell off, maybe this happend because the nozzle was bent during the wiping
The purge line seems to be ok in my case and is not on the edge of the build plate. But I am going to take the hotend out and have a look at it after work. Thanks again!
Someone here in the forum once swore that you should simply line the chute with aluminium foil. In other words: reduce friction and minimise the possibility of the hot plastic sticking somewhere.
Whether you do this with PTFE spray, aluminium foil or whatever … .
Thanks but I am wondering how you line the cute with aluminium foil, the foil must lay perfectly on the chute
I take a look on the hotend today and then try my bicycle wax. I also have some Mucoff PTFE spray, that could also do the trick
I will let you know in the next days if that helped.
Because this is my first Bambu 3D printer and I’m easily entertained by watching the printer do it’s thing…
It wasn’t the poop chute cover that popped off, it was the extruder/hot end cover.
I plan on modifying the purge volume down a bit as I feel the default settings are a bit excessive.
I took a look at it yesterday, nozzle was not bent in my case.
I cleaned up my printer yesterday and I used some PTFE spray from Mucoff which I use for my Mountain- and Road Bike for a coating to prevent the bikes from collecting dirt. You can also use that spray on the fork of the Mountainbike, there you have rubber sealings and I never had a problem with that, so it is safe for the printer/poop chute.
Anyway I applied a thin coating with a cleaning cloth on the poop chute and I am going to try it out this week with a multicolor print.
This is idea is pure speculation, because I’ve never had this sort of constipation.
There is a small metal rectangle stuck to the front chute wall that I think is intended to prevent the poop from sticking to the wall, probably by rapid cooling.
In the pictures of blockages above, those rectangles are placed far to the left, where the nozzle may never reach.
Even mine is somewhat offset from the nozzle, but there is enough overlap that it still works.
I do not think it is necessary to line the entire chute with aluminum foil. but it may be helpful to stick a bit of foil to the top front, or maybe just folded over the edge.
Ah okay thanks for your reply. I was wondering why there is a metal plate. On the weekend I saw a Youtube Video where someone had the same issue, he used 3M PTFE Scotch Tape and put a piece on the inside of the chute.
He also showed in the video that the small plate inside the chute has a special coating on in which also prevents the poop to stick on it. He also put a small piece of the tape on this plate.
I take a look later where this metal plate is placed exactly on my printer. But I thought about it for a minute and I am not sure if the problem is more or less on the bottom of the chute or that the plate is too small?
Do you have some sort of container behind the printer to catch to catch the purged balls of filament?
Many of those designs, Bambu cautions against using because of this exact problem.
Does the flapper in the top end of chute move freely? The flapper, when it is closed (by design) is how the balls are created but once the purge is complete and toolhead moves away, it should open the flapper and dump the ball.