Nozzle Cooling - Toolhead

With high flowrates come great responsibilities, one of them is keeping the nozzle hot enough.

The nozzle cooling too much from the part cooling air could cause issues during printing, as cooling the plastic at the nozzle restriction is the perfect recipe for increased backpressure.

In this simulation a TC nozzle is inserted in a 300° heablock, and you can see the big gradient than happens because of the air cooling the hex. (281,5°)

For maximum performance it's necessary to minimize this as much as possible, shielding the nozzle from the air