Chamber Fan Louver for Creality K1 Max

Intended to be used for post-print chamber cooling (ASA, ABS, etc.) when the K1 Max is modded with an internal charcoal filter. I installed the excellent OugleSauce side fan filter mod.

If you want, you can reuse that sketchy Creality stock charcoal filter. Seriously, you can see through that thing!

Required Hardware

• Qty: 4 - *Heat set inserts, M3×5×4 “Voron” style (Amazon link - not affiliated. Just an example.)
• Qty: 4 - *M3×8mm SHCS (Socket Head Cap Screws) (M3×10mm will also work)

*If you've built a Voron, you probably have some of these left over.

Printing

All models are oriented to the build plate with the correct face placed down on the bed. Rotate to fit as needed.

I recommend that you print and install the Not_a_Filter if you are not going to use a stock Creality “filter.” It's designed to better direct the airflow to the blades.

Supports: Needed only for Filter_Frame.stl under the inside horizontal edge as shown in the pic.

I printed this on a K1 Max using the Voron printing guidelines with Coex ASA Prime. Other materials should work, such as ABS or PETG. Not sure about PLA, try it at your own risk (those blade pins are small). Print all parts on a smooth plate; this is especially important for the blades.

• 0.20 layer height (Including first layer. Also makes for cool looking blades)
• Extrusion width: 0.40 forced
• 40% infill (I used adaptive cubic, but others will work)
• 4 walls
• 5 layers top/bottom

Post-Processing

The blades must freely swing in the frame. File/sand away any roughness on the pivot pins. The holes in the Louver_Frame can be cleaned up with a 3/32" (2.3mm) drill bit if needed.

Assembly Instructions

Refer to the exploded view pic or included PDF.

1. Install the heat set inserts in the Filter_Frame flush or just below the surface.
2. Make sure the larger opening on the Not_a_Filter is facing the fan side when placed in the Filter_Frame.
3. Install the blades in the Louver_Frame with the smooth (bed) side facing the fan. Carefully flex each blade to line up the pins and holes.
4. Line up everything as shown in the assembly view and install the screws.

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(CAD STEP file included) (V2: 26-June-2024 Revised Louver_Frame and Filter_Frame to remove my brain dead design complexities)

Kept only the features that mate with the filter opening in the printer case.