Hello, I been printing a brand of Wood PLA which is on the higher end of wood content at 40% wood. This brand I only print on .6 nozzle as it would clog the .4 very quickly. With this change I have gone through several spools without issue and nearing the end of one spool I have ran into 2 different clogs even on the .6 nozzle. I am going to speculate here that this role or batch has some larger chunks and typically .6 would be fine.
The way I have been able to unclog a few times with the .4 nozzle was torching this little allen key that came with the Bambu and jamming into the top of the nozzle hoping it melts the jammed PLA out. While this worked a few times previously I am only able to push the heated up allen key to a certain point, roughly 75% of where it needs to get to fully clear the jam. I now have two .6 nozzles sitting here fully jammed up from the same roll of wood filament that no matter how much force I am not able to push the crappy little heated up Allen all the way through.
So there has to be a better way than holding onto this little alen key with a plyers and torching and trying to generate enough force to cram into the top nozzle hole? Maybe a larger with a full size handle where you could actually get some leverage than this tiny alen key.
I get most people are not getting Jams and until I got more involved in PLA with a higher percentage of Wood I never had them either. That said, I really like this higher percentage of wood PLA and can handle an occasional jam however seems like there has to be a better solution to un-jam the nozzle.
I have the same question: I got a nasty clog using a 0.4 nozzle. I just read a 0.6 nozzle is recommended.
I did the cold pull and it seems succesful, but only partially. I tried to use the needle included to open the nozzle from below, but as the clog is nasty and persistent, I can’t get the nozzle fully open and clean.
Is there a way to thoroughly unclog the (Bambu) nozzle?
It really depends on how severe it is. Since I print quite a bit of wood filaments I have come up with a few rules that for the most part have made clogs go away for me when printing wood pla. For wood pla with 30% or more wood use a 0.6 nozzle. 25% or less I have had no issues using the 0.4 nozzle. As far as unclogging I have had some success heating up the crappy Allen key and jamming into the hole however this takes a huge amount of force, hold it with a plyers and heat the key up to red hot with a torch. Allow it to cool for 30 seconds and pulling this out with the plyers can also take a large amount of pull. You might also want to consider picking one of these tools listed below. I did buy one of these however have yet to have another clog since following the basic rules I listed. https://www.amazon.com/gp/product/B0B85Q21B3/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Thanks for the input kungpaoshizi. I replaced the nozzle and sat down and went at the nozzle. It was indeed some fiddling and pulling and pushing. It seems to be clear now. When I have time I will use the Sunlu cleaning filament first before using the nozzle next time.
