360 Deg Overhang Test/Challenge 60-70-80

If we scroll back to 2021, the consensus on Redit was that 80 degree overhangs were not even thinkable, but as things evolved, this is now totally possible.

This particular test evaluates cooling a bit further as in all the way around (360 degrees), the issue is that the ducts that are currently out there are not providing after extrusion cooling adequately at above 70-80+ wall speeds. The problem is that the laid bead of filament is still hot even after the extruder nozzle has already moved far away from the extrusion point (along with the cooling duct).

There are several options to solve this:
- A: Either blast the freshly extruded filament with a pointed jet to get it to solidify, near the nozzle (Taurus).
- B: Go with a more distributed and more open duct that basically provides high pressure “air conditioning” across the general area that was just extruded (also available).
- C: A combination of A & B
- D: Aux fans:, For example: Creality 3 Aux Fan Module.

All options are available and shine at different speeds.

The model shown in the picture was printed at 80 mm/s wall speed at 0.2mm layer height, in under 20 minutes on a Taurus V5, in Hatchbox PETG.

If you can achieve the same or better quality, you should have a setup going already that is capable to print sub 30 minute speed Benchies with a few more tweaks of your own choosing ;-)

Please post what you got.
Mac :-)