Unblocking NozzleUpdated 5 days ago

If there is blockage in the ruby nozzle tip, we recommend following methods to unblock the nozzle:

"Cold Pull"

Cold pull means heating up the nozzle while the filament is still loaded in the hotend. Preheat the hotend to melting temp and then let it cool downs. When its temperture is below melting temp and the material is about to solidify, pull out the filament from the hotend by hand quickly. This will pull out the blocking material altogether with the filament. However some printer extruder design do not allow cold pull to be done, so please consider following methods:

1. Using Solvent

Submerge the nozzle in an organic solvent overnight to dissolve the blocking material. This is the most effective method but also require chemical solvents such acetone.

2. Physically Unblocking.

Use a 0.4mm needle to push through a block when the nozzle is heated up. It is better to push out the block from the back of the nozzle. Be careful not to break the tip with too much force.