Zephyrus Duct System / Z.D.S for CPAP VzBot (BD Sensor M, Beacon RevD-H, Cartographer)
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A new CPAP duct system for CNC Printheads, fits VzBot CNC printhead as well as my own upcoming Artsy printer.
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Updated at source:
Model information
- Source
- Printables
- Category
- Other Printer Parts & Upgrades
- License
- Creative Commons — Attribution — Noncommercial — Share Alike
I ran with a Tentacool nozzle duct for a while, but noticed it was lacking in flow.
I also needed a new setup due to me using a BD Sensor M, so I started working on a new simple duct system for my Artsy printer. Which also made it work on the VzBot with some minor changes to it to make a “perfect” fit.
These files contain all the three parts necessary to go from the tube down to the nozzle, and will only work on the CNC VzBot printhead, with cylindrical shaped hotends. Like the Rapido and Goliath hotends.
DOES NOT WORK WITH SQUARE HOTENDS!
There is now an adapter for the Cartographer and Beacon probes available, it can also function as an extender. If you need some extra distance between the funnel and the tube duct part.
Print in whatever stiff and high temp material you usually run with.
Print settings I have used;
Nozzle size - 0.6
Layer height - 0.2-0.3 (If higher than 0.2, you will have gaps in the Zephyrus duct)
Walls - 2
Top/Bottom layers - 2
Infill % - 15-25
Infill Pattern - Gyroid or Cross Hatch
This 3D model project does not require any special tools or hardware, apart from M3 threaded inserts and whatever M3 bolts you have or think should work best.
I have designed the thread insert holes after the Tapex Thread inserts, I find this to have the best grip.
https://www.tappex.co.uk/products/brass-threaded-inserts/multisert/?type=single-thickness-head&thread=M3&length=4.1&extras=large#selector
Velocity comparison tables
| Open CPAP | With C.M.S only outlet muffler box, no pipe |
| 25% | 4.2 m/s | 25% | 4.2 m/s |
| 50% | 10.3 m/s | 50% | 8.9 m/s |
| 75% | 16.9 m/s | 75% | 14.2 m/s |
| 100% | 21.2 m/s | 100% | 19.5 m/s |
| With C.M.S, no pipe | With C.M.S, w/ 18.5 ID pipe |
| 25% | 3.6 m/s | 25% | 2.8 m/s |
| 50% | 7.4 m/s | 50% | 5.8 m/s |
| 75% | 11.6 m/s | 75% | 8.8 m/s |
| 100% | 16.7 m/s | 100% | 10.9 m/s |
| With C.M.S, w/ pipe, w/ Z.D.S | C.M.S + Z.D.S comparison values for Mammoth-3D CPAP |
| 25% | 2.7 m/s | 20% | 2.2 m/s |
| 50% | 4.5 m/s | 40% | 4.3 m/s |
| 75% | 6.8 m/s | 60% | 6.7 m/s |
| 100% | 11.0 m/s | 80% | 9.2 m/s |
| 100% | 11.0 m/s |
These are max values I achieved during my testing, max stable velocity that is.
Initial Release - 2024-09-26;
Tested and working as is.
Initial Release - 2024-09-27;
Uploaded .3mf file with proper orientation
Uploaded new model - 2025-05-27;
Uploaded new step model, adapter for Beacon and Cartographer. Initial design by Sashi.VZ.228 over at VzBot Discord server.
https://www.printables.com/@sashi_1528387
Uploaded new model - 2025-06-20;
Uploaded new step model, another version of a Beacon and Cartographer mounting system.
Does require some modding to work, like desoldering the smaller board on the Beacon RevD Cartographer. Not required on the Beacon RevH
Uploaded new models - 2025-07-04;
Removed old ones, and replaced with new ones. Adapter is now obsolete.
BD Sensor M only had some material added on the inside of the Z.D.S Duct.
Beacon/Cartographer version now have an integrated mount for Beacon Rev D, Rev H and the Cartographer.
Cartographer needs more testing, I have no CAD model to confirm fitment of it.
Uploaded new models - 2025-07-04;
Found a model error in the Beacon/Cartographer file, uploaded fixed version.
As well as missing .3mf files, for print orientation and support recommendations.