Cleaning is always a good idea, but especially after printer filaments that have particles in them.
You have to think about the fact that these materials (at least the ColorFabb ones: BronzeFill, CopperFill, WoodFill, BambooFill and soon BrassFill) are based on PLA.
When you start to have printing problems and the materials stays inside a heated nozzle for a longer time, the PLA will start to move out from between the particles (metal or wood) and this will lead to a clump of particles which can be hard to clean.
But if you don’t clean your nozzle completely, these particle-clumps can lead to random blockage later on as one of them will come free and try to come out through the nozzle.
At ColorFabb they print these materials mostly with regular feeders on their Ultimaker 2’s.
It works quite well once you have the settings dialed in.
Also keep in mind that printing to slow can cause troubles as well.
Most temperature settings are designed for the regular speeds (around 50mm/s mostly) and printing really slow may cause additional heat to travel up trough your hot-end and will cause the filament to start melting (and thus expanding) higher up in the nozzle.
This will then lead to additional friction inside the hotend.
If you are still having problems, just send ColorFabb a quick email to support@colorfabb.com.
If you click on the /ColorFabb tag here you’ll enter the ColorFabb sub community. There’s a couple of Bronzefill posts there as well. That might also be of help. Cheers
I never had problem with bronzefill. It’s all about speed and temperature. You must know more about material. At the first clean your nozzle, use aceton, water, burn nozzle, hot wire. Try again if is not blocked. If not, see official website which temperature is correct to use and test it with printer. Jammed nozzle means bad speed with bad temperature or material flow. Ultimaker is powerfull printer and you are able to change almost everything during print. Try it.
