Sovol Zero / SV08 Max Toolhead Shroud (Cover with Toolboard Fan Mount)

This is a direct replacement for the stock front cover of the Sovol Zero and Sovol SV08 Max toolheads.
Besides improving part cooling performance, it also adds support for a dedicated toolboard fan (2510 size).

We tested the part cooling performance of the Sovol SV08, SV08 Max, and Sovol Zero using an anemometer 📏
Even with the same fan, airflow results were very different!

• ✅ Stock results:

• SV08: 6.6–6.7 m/s - For Reference! 

• SV08 Max / Zero: 7.6–7.7 m/s

Then we swapped only the front shroud/cover with our CN3D upgrade → airflow jumped to 8.0 m/s 🚀
No fan change, no duct change—just our shroud!

This is only the beginning—we’ve made more upgrades coming in the next video, so stay tuned 🔔
See the benefits in the Video below 

🔧 Features

• Direct drop-in replacement, no other mods required

• Improved airflow → higher part cooling performance

• Integrated mount for a 2510 toolboard fan (no need for a larger fan)

• Compatible with both Sovol Zero and Sovol SV08 Max toolheads

📦 Bill of Materials (BOM)

• 1× 2510 axial fan (24V)
  Recommended: GDS TIME 2510, 24V https://s.click.aliexpress.com/e/_oDKZkqT 

• 4x M3x4.5ODx4mm Heat set inserts https://s.click.aliexpress.com/e/_c4B6hghP 

• 2x M3x4mm https://s.click.aliexpress.com/e/_c3DOSkVP

• 2xM3x22mm https://s.click.aliexpress.com/e/_c3rJQLJr 

• 4x 4x3 N52 Magnets https://s.click.aliexpress.com/e/_okg1u0n  Or reuse stock

🖨 Printing Recommendations

Material:

• Recommended: ABS

• Optional: AERO ASA (for lighter weight & higher stability)

Slicer Settings:

• Perimeters: 4

• Top layers: 5

• Bottom layers: 5

• Infill: 10% Gyroid

Supports:

• Use Organic auto-generated supports

• Disable Small Overhangs in the Support tab
  

  

⚡ Toolboard Fan Wiring

Recommended fan: 2510, 24V, ~0.06A 

For Sovol Zero:

Connect to PA2 and 24V (see wiring diagram in repo)

For Sovol SV08 Max:

Same pins listed above can be used! the toolhead boards are the same!
Either splice into the hotend fan wiring Or use a small MOSFET for safe control You can use the BLTouch port (24V available) — but even with low fan current, it’s recommended to use a MOSFET

In Klipper: declare as toolhead_fan and configure it to turn on when extruder > 50 °C

[generic_fan toolboard_fan]
pin: extra_mcu:PA2 
heater: extruder
heater_temp: 50.0

Simple and reliable
Fan switches ON when the extruder > 50 °C
Fan switches OFF when the extruder cools down
No extra sensor needed
✅ Best if you just want a “follow the hotend” fan behavior

OR

[temperature_fan toolboard] 
pin: extra_mcu:PA2 
control: watermark 
max_delta: 3.0 
sensor_type: temperature_mcu 
sensor_mcu: extra_mcu 
min_temp: 0 
max_temp: 100 
target_temp: 38.0 
max_power: 1.0 # 100% 
shutdown_speed: 1.0

Uses the MCU’s internal temperature sensor
Fan ramps automatically to keep MCU around 38 °C
More precise thermal control, especially in enclosed printers
Will stay on even if the hotend is cold, if the MCU is heating up
✅ Best for toolhead boards inside hot chambers (like SV08 Max with enclosure)

⚡ My recommendation

For open printers (or if you want simplicity): use Option 1 (generic_fan).

For enclosed printers or if you want the fan only when the MCU gets hot: use Option 2 (temperature_fan).

For SV08 MAX Advanced solution with the mosffet see here

https://www.printables.com/model/1515435-sv08-max-sv-zero-multicolor-toolhead-upgrade-by-cn#alternative-solution-advanced-optional-

📦 Compatibility

• Sovol Zero toolhead

• Sovol SV08 Max toolhead

💡 Want this upgrade on your Sovol SV08 or another printer?
You can install the Sovol Zero toolhead (affiliate link):
👉Buy here Affiliate link – Sovol Zero toolhead  https://tidd.ly/4pgwrdx 

With the Zero toolhead you get:

• ⚙ Planetary drive with hardened gears

• 📡 Eddy current probe

• 🔌 CAN toolboards

• 🛠 Everything you need for a solid toolhead in 2025

• And on top of that, we’re offering CN3D upgrades to make it:

• ✅ Lighter

• ✅ Ready for MMU (with dual filament sensors)

• ✅ Equipped with a filament cutter

So whether you buy the full Zero toolhead or just add our cover/shroud, you’ll unlock the airflow performance we showed in this video 🚀

💡 Want this upgrade on your Sovol SV08 or another printer?
You can install the Sovol Zero toolhead (affiliate link):
USA 
👉Buy here Affiliate link – Sovol Zero toolhead  https://tidd.ly/4pgwrdx 
EU
👉Buy here Affiliate link – Sovol Zero toolhead https://tidd.ly/48LDSTi

💬 Want to Help Improve It?

If you test it, please leave a Make or comment with your results and suggestions. We’ll include all confirmed improvements in the final release.

Let’s bring our Sovol printers to the next level – together! ⚙🔥


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