Filament Jam  

Re: Filament Jam

Use heat and pull it out the top. You're going to have to replace that PTFE tube. Would have been nice if there were extras of that included, but there aren't.

If its pla, you could probably use a hair dryer to safely heat the top for a bit and use pliers to pull it up. The black catch will need to be kept down to allow the tube to be removed. If its another material like PETG/ABS you may need a heatgun or torch (hair dryer may still work).

I'm going to take a guess if its the kit, your Noctua fan was mounted backwards. It won't throw an error and wont cool the heat sink enough causing melted plastic to jam where it did.

Re: Filament Jam

Thanks I will do that. I am pretty sure I had the fan the right way but I will make sure when I go to reassemble.

Re: Filament Jam

Thanks I will do that. I am pretty sure I had the fan the right way but I will make sure when I go to reassemble.

Oh wow, that's quite the blockage 😀 I have the same issue but am not able to remove the hotend anymore ( https://shop.prusa3d.com/forum/original-prusa-i3-mk3-f30/filament-stuck-in-cold-end-t15465.html ) because the PTFE expanded on both sides of the plate underneath the gears. I checked and the fan was mounted and working correctly, but I'm beginning to believe that my block at least was caused byt the heating of the bondtech gears via the E-motor. There's an insightful discussion and what to do about it here: https://shop.prusa3d.com/forum/original-prusa-i3-mk3-f30/pla-jamming-below-bondtech-t15388.html#p75519

Once I get it fixed (hopefully) I'll steer clear of PLA for now or at least print it very hot and slowly.

Good luck with removing the filament and happy printing!

Re: Filament Jam

Use heat and pull it out the top. You're going to have to replace that PTFE tube. Would have been nice if there were extras of that included, but there aren't.

If its pla, you could probably use a hair dryer to safely heat the top for a bit and use pliers to pull it up. The black catch will need to be kept down to allow the tube to be removed. If its another material like PETG/ABS you may need a heatgun or torch (hair dryer may still work).

@andrew, you're a genius 😀 Using a hair dryer worked, I could remove the blob of filament easily, thanks! I still can't remove the hotend from the extruder case, do you have any idea what might be the problem?

Re: Filament Jam

Use heat and pull it out the top. You're going to have to replace that PTFE tube. Would have been nice if there were extras of that included, but there aren't.

If its pla, you could probably use a hair dryer to safely heat the top for a bit and use pliers to pull it up. The black catch will need to be kept down to allow the tube to be removed. If its another material like PETG/ABS you may need a heatgun or torch (hair dryer may still work).

@andrew, you're a genius 😀 Using a hair dryer worked, I could remove the blob of filament easily, thanks! I still can't remove the hotend from the extruder case, do you have any idea what might be the problem?

The PTFE Tube? My guess its the black retainer is fused with it. You can pick up spares of those for cheap.
Here is an example https://www.filastruder.com/collections/e3d-spare-parts-and-accessories/products/bowden-couplings-all-types
Maybe use the pliers at the black piece and pry from there? The PTFE tube has a higher melting point than the PLA... so you may need something stronger than the hair dryer.

If you're not talking about the PTFE tube... then I'm lost. The heatsink from the hotend? They are held together with some thermal compound. Light heat may help. If you have a vise, clamp the hot end in it and gently heat up the heatsink. You just want it to expand a tad to break free. Overheating the Aluminum will cause it to warp and be useless (personal experience with the MK2). Hair dryer first may be the way to go. If you don't have a vise, then 17mm wrench on the hot end with some pliers on the heatsink. I have a Robogrip which is awesome.

Re: Filament Jam

Ah sorry, I should have been more specific. I cannot remove the whole E3D hotend, from the PTFE tube down to the heatsink from the extruder body. I have a video here: . I got a recommendation to try to slice the PTFE through on the bottom with a razor blade, although so far I have not been able to shift it enough to let anything slide in between body and the top of the heatsink.

I cautiously loaded PETG manually into the mangled PTFE tube and the printer prints well. I won't trust filament autoload until I can replace the tube.

Re: Filament Jam

Prusa support helped me removing the heatsink from the extruder. In effect I had to pull brutally while pushing from above with an Allen key 😀

Re: Filament Jam

Wanted to post a reply to this. The filament was so jammed in the Heatsink had to order a new heatsink and some PTFE tube. Got the everything put back together tonight and it is printing well now. Currently printing Buddy the Pug to test. So far so good. Still working to see if I can save the other Heatsink but so fave nothing has worked.

Re: Filament Jam

@andrew.e7 did you try blasting it with a hair dryer? I could push the filament through after heating it up nicely.

I never did manage to get the new PTFE tube that I cut with an exacto knife to be the exact same shape of the original one, so autoloading filament is out of the question for me, it has a high risk of catching on the upper edge of the tube.

Re: Filament Jam

Currently printing Buddy the Pug to test. So far so good. Still working to see if I can save the other Heatsink but so fave nothing has worked.
I have also this issue on my HP laptop for this issue you can contact HP Support Number for any type of issue on your HP devices.