Wood Filament stopped extruding halfway through the printing process

[Kurniati 0]

I use speed, temperature and retraction according to what colorfabb suggested ( http://learn.colorfabb.com/how-to-print-with-woodfill/ ). I am using 0.4mm Nozzle, 0.27mm layerheight, 105% material flow, 205C nozzle temperature, 70mm/s speed. The first 3 prints are printed fine, however, when the 4th one is printing, the printer suddenly stopped extruding and black liquid came out after more than 5 hours had passed. So, I cleaned it using the atomic method and the charred part comes out of the nozzle. The STL files has been checked, it’s water-tight, no errors. So, it might be the nozzle problem, but we are not exactly sure about it. Does anyone know why this is happening?

[gr5 2,097]

Almost surely it's clogged. The pieces of wood can get stuck in the nozzle tip. I recommend you print with .6mm nozzle or larger for this reason. Do you have an olsson block such that you can change nozzles? If not I sell them here:

http://thegr5store.com

If you do have the Olsson block you can just unscrew the existing nozzle (while hot - at 150C or warmer) and check it and maybe burn it out in a gas flame until everything in the nozzle is burnt to ash.

[Kurniati 0]

Yes, apparently it is clogged. I do have olsson block. I guess it is possible to print using 0.4 nozzle with wood filament until a certain amount, then it'll start clogging, but recommended to use 0.6?

Thanks gr5!

[wishbone 3]

Yes I have been trying to print with this stuff as well. The bamboo fill. Its a total nightmare, worst clogging I have ever experienced, black stuff spewing out everywhere.

Ill have to get myself an Olsson block and try a bigger nozzle.

[DidierKlein 729]

Indeed it's possible to print woodfill with a 0.4mm nozzle but it increases a lot the chance of clogging the nozzle.

I print a lot of woodfill with a 0.6mm nozzle and have no issues at all!