Ender 3 pro Spider Hotend Fan Shroud

Updated v2 printable fan shroud and touch-probe spacer for my Ender 3 Pro Spider hotend toolhead setup. This listing includes only the latest design files.

What changed

• The updated final shroud replaces the earlier revision.

• A separate BLTouch spacer is included to support the touch-probe mounting arrangement and make it more rigid. It is intended to reduce mount flex; stiffness and probing repeatability have not been measured.

Files to print

• v2_spider-hotend-fan-shroud.stl — current fan shroud.

• v2_bltouch-spacer.stl — touch-probe mounting spacer.

• STL files only. No slicer profile or editable CAD source is included for this revision.

Compatibility

• Ender 3–style X carriage with the Spider hotend toolhead assembly used in this design.

• 50 × 15 mm (5015) radial blower. The blower attachment uses glue and/or a small side mounting screw.

• Verify your exact probe, mounting-hole spacing, screw engagement and nozzle-to-probe position. Probe compatibility is not universal.

Print guidance

• Use a material suitable for the measured temperatures near your hotend. Avoid PLA for sustained high-temperature use.

• Starting settings: 3–4 perimeters, at least 20% infill and 0.20 mm layers. Inspect the sliced geometry and add tree supports where needed.

• Keep airflow passages and mounting holes clear. Dry-fit both parts before final installation.

Installation

1. Power off and fully cool the printer.

2. Check the hotend, fan, probe and mounting arrangement against your assembly.

3. Fit the spacer at the probe mount. Use suitable fastener lengths with adequate thread engagement; do not overtighten printed parts.

4. Install without pinching wires or blocking airflow. Check full carriage travel and deployed/retracted probe clearance.

5. Recheck probe offsets and Z offset after changing the mount. Verify probe operation before homing toward the bed.

6. Monitor the first heat-up and print to confirm cooling and temperature suitability.

License and safety

Shared under CC BY-NC-SA 4.0. Commercial use requires permission from the creator. These are heat-adjacent printer parts: check fit, airflow, wiring clearance and material suitability before use. The probe spacer is an unvalidated modification; inspect mount rigidity and operation on your printer. Print, install and use at your own risk.