Improved and more gentle atomic pull method of nozzle cleaning

thingiverse

I can take no credit for this method, which is described in detail here: https://www.uantwerpen.be/images/uantwerpen/container11343/files/improved_atomic_method_v20160713.pdf The basic approach involves heating the filament, extruding a small amount, and then backing off to reduce the amount of filament in the PTFE tube between the extruder gear and hot end. It's essential to leave it to cool down thoroughly before heating it up again just enough for the filament to melt while twizzling. I've successfully used this approach many times on my Wanhao Duplicator I3 Plus, whereas traditional atomic pulls consistently failed. Read the pdf and comments in the gcode for a clearer understanding of the process. TwizzleS1 does all the heat, extrude, back off, and cool steps, so you simply run it and let it go for 30-40 minutes. Then, run S2 while twizzling, and manually raise the extruder temperature slightly if needed. I'd love to hear how this works out for you.