3D Printers are getting faster, but longer hotends are harder to manage and the CHT doesn't scale much past a volcano meltzone. Here's a geometry that should scale, and testing indicates a flow improvement of 50% over the typical spacer.
Made using a copper bolt, crappy drill press, and a jeweler's saw. You can make one too, so please share when you do a better job! And maybe help me come up with a clever name ;)
Names in the running (as commented):
- Xylem Nozzle - Xylem is the plant tissue water and nutrients are pumped through
- XHT (Xternal Heating Technology)
- Xtruder
- "X-Flow” or the “Cross Flow”
Details
Most details are in the video, including how to make it. I'll add details here as I continue experimenting.