Pico
User Guide
7
Maintenance
Cleaning threads
Changing nozzles may require
removing plastic from the brass and stainless steel
threads to ensure a good seal between the nozzle and
Pico body.
This can be accomplished with a combination of
acetone, tweezers, sharp objects (needle, toothpick,
hobby knife etc.), and/or a spiral wire brush that can be
found in any small gauge gun-cleaning kit.
For Pico inner threads: it is best to leave Pico attached
to your printer with the brass nozzle off, the heat on and
Z axis raised high. With the aid of a mirror, use tools to
clean plastic from between threads, being careful not to
scratch the inner bore of Pico.
For brass nozzle: it is best to soak the brass nozzle in
acetone for at least 24 hours. Then use a wire brush or
hobby knife to carefully scrape away soft plastic. Avoid
contact with the chamfer as this will scratch the seal
surface.
Cleaning the inner bore of Pico
Wear proper safety
equipment. Conduct procedure in a well-ventilated
area.
Note:
Autoignition of acetone is 465°C
This process may be easier to complete while Pico is
unmounted but still electrically connected and safely
secured in a suitable open working area.
Remove any loaded filament while Pico is hot (
See:
Starting a Print—Hot Loading and Hot Unloading
Filament).