tuannat/crowncooler

"Crown" shaped cooling duct and associated hot end mount for Voron Trident and V2.4 printers

CrownCooler

This mod is designed to adapt a fan mounted somewhere on the frame, through a CPAP tube and onto a "crown" shaped cooling duct. It has been designed for the Voron 2.4 and Voron Trident series of printers, mounting directly to the stealthburner X carriage.

This mod was developed to:

• be compatible with standard voron stealthburner carriage

• be compatible with all extruder combinations that are compatible with the stealthburner system, (CW1, CW2, Orbiter, LGX Lite, etc.)

• mount a Rapido HF/UHF hot end & Dragon SF/HF/UHF hot end

• improve overall cooling performance by accomodating very large fans

• provide uniform cooling from all directions

• be lightweight and easy to maintain

• work with klickyprobe & euclid probe.

This mod is still a BETA. Expect issues - but let me know about them so I can fix them.

Feel free to contact me directly on discord if you would like to help me test this mod and provide feedback.

Gallery

My setup:

My system specifications:

• Voron 2.4r2
• UHF rapido with CHT volcano nozzle
• Orbiter V2.0
• Euclid probe

A WS7040 blower can effectively cool volumetric flow rates beyond 70 mm^3/s (this is the limit of the hot end, NOT the cooling!).

CFD results:

Dragon SF/HF

Dragon UHF

Rapido HF

Rapido UHF

Part Cooling Fan Options

There are a number of part cooling fan options to choose from, depending on your intended use case.

4028 fan

A "medium" performance option is to use a 4028 fan on the end of the CPAP tube. This solution is best suited for ABS and similiar materials (or PLA but printing at slow speeds, aka <200mm/s) that do not require high amounts of part cooling.

A 4028 to CPAP tube adapter part is included in the STL files folder. I have not developed a mount to attach the fan to the frame, but I intend to do this soon.

Recommended 4028 fans include:

• Sanyo 9GAX0412P3S001
• Delta FFB0412UHN-SM36

7040 blower fan

A "high" performance is to use a 7040 blower fan on the end of the CPAP tube. This solution is best suited for printing PLA & PETG at low to very high speeds. It can print ABS, however it will likely be cooled more than required (due to the minimum fan speed of the blower) - and the ABS part strength will be decreased.

A 7040 blower fan mount can be found here.

I recommend the WS7040 along with the controller board. I purchased mine from Trianglelab here.

BOM

• 2510 hotend cooling fan. I purchased this one.
• QTY:2, 2.5mm x 14mm self tapping screw, for 2510 fan.
• QTY:2 M3x4x5 heatset inserts
• QTY:2 M3x8mm SHCS DIN912
• QTY:2 M3x16mm SHCS DIN912
• QTY:2 M3x50mm SHCS DIN912
• Blower fan, see section above.

Installation instructions

• This mod uses the standard stealthburner X carriage parts. The back piece of the rapido toolhead mount is also used.
• This mod should work with all types of extruder mounting parts, including CW2 (however, I have not yet tested it). I use the orbiter V2 extruder mount found here.
• Print the cooling duct with no supports, file in STL folder. Recommended to use 0.1mm layer height.
• Print the front & rear toolhead part with supports.
• Only euclid and klicky probes are compatible at the moment. Use the offset klicky mount for HF hot ends, use the tall offset clock mount for UHF hot ends.

Development Roadmap

1)[COMPLETE] - Proof of concept testing

2)[IN PROGRESS] - Beta testers needed!

3)[COMING SOON] - Rapido UHF release. Other hot ends will be released afterwards.