Filament stuck in PTFE inside heatsink  

Re: Filament stuck in PTFE inside heatsink

MAterial? PLA can handle hairdryer, or boiling watter. For ABS, Nylon, ASA etc. Id like to use Hot air gun. If you dont have one, use oven. Just put it on baking sheet cowered wit alu foil and heat it on melting temp of inserted material. Then use pair of lineman's pliers and hold heatsink and push something 1,75mm thru ptfe. In wrost case just push new fillament.

Re: Filament stuck in PTFE inside heatsink

Thanks for the response. Good question..it’s the standard PLA 1.75mm that came with the i3 2S. I like the thought of trying the oven. I’ll give that a shot.

Re: Filament stuck in PTFE inside heatsink

I was able to clear it out by putting her heatsink in the oven a melting the PLA down. It took several cycles to get it all out, but it worked! I reassembled and it's printing now. Thanks for the help!

Re: Filament stuck in PTFE inside heatsink

thanks for the tips on clearing it the jam,.... BUT my question is why does it keep happening ?... im using PLA 1.75.. on a the stock nozzle ...ive tried two different filaments and it keeps jamming in the cold end while trying to do z axis calibration...I HAVE YET TO PRINT ANYTHING. .. i I CANT EVEN GET THROUGH the calibration without it jamming! IT HAS JAMMED 4 straight times!

ive tried two different spools of PLA
ive used TWO different NEW hotend assemblies!!!!
ive replaced the PTFE Tube twice on the same assembly
ive calibrated xyz about 5 times

so ive rulled out it being a faulty hotend build.. this is my guess ,but could it be print speed vs extruder speed?

my pla when it comes out of the nozzle is very stringy and it does not stick to the bed ... it just keeps balling up by the nozzle, no matter what i do with the z height … then after about 10 minutes of trying the filament stops printing and it jams up in the coldend 5 straight times now!!!

I will post some pictures tonight of the pla and the pfte tubes that ive pulled out

Re: Filament stuck in PTFE inside heatsink

here is some pictures

Re: Filament stuck in PTFE inside heatsink

ok I figured it out !! thanks to someone elses problem on another post …. they mentioned how improper cooling on the hotend was causing filament problems... so it turns out the problem was the fans were switched on the motherboard 😆 🙄 😡 😳 so the nozzle fan was always on NOT the left hotend fan.... this simple mistake set me back weeks not to mention buying of parts I didn't need (I thought maybe it was a bad hotend) !! 😡 BUT this did not solve my problem with the pla not sticking to the bed...thats another story and another post

Re: Filament stuck in PTFE inside heatsink

Congrats
PLA dont stick too much. On new steel sheet you can always take of it with nail. If you dont like this, use a kores glue stick, which you get with you printer.