JG Aurora Z603S TPU Support

JGAurora Z603S does not support TPU printing. If you insist to print TPU, filament will bend and come out before it goes into the hot end. So you need something to keep it straight before it is pushed into the hot end.
I designed this thing by TinkerCad. It is a permanent add-on to the original Z603S extruder, the small hole is for the filament and the big hole is for the spring, you'll figure out how it works.

This addon works perfectly on my Z603S, compatible for PLA and TPU. JGAurora may