Creality Ender 3 4010/4020/5015 Fan Mount and Duct

Ender 3 4010/4020/5015 Fan Mount and Duct

Main Cooling Fan Mount

This part is based on the stock fan cover, but allows the use of a 4020 axial fan on Ender 3 and maybe other Creality printers for heatsink cooling. If using a 4020 fan it must mount on the outside. A 4010 fan should work mounted inside, but I haven't tried it. You can use the stock part cooler or the 5015 bracket and duct with this part (see below).

Parts needed:

- The stock heat sink cooling fan or another 4010 or 4020 axial fan. (The Ender 3 fans are 24v.)

- 2-4 M4 x 15-25mm screws depending on your fan size for mounting the fan. (I only use 2.)

- 4 M3 x 8-10MM screws.

- The original 2 M3 fan cover mounting screws or 2 more M3 x 6mm. If using a socket cap screw for the top bracket slot, a small washer may be needed.

- The original 4 part cooling fan screws or 4 M2 socket cap screws. I believe the stock screws are 2 8mm at the top and 2 10mm at the bottom (where the duct mounts).

Parts to print:

- plenum_v2.stl

- bracket_left_v2.stl

- bracket_top_v2.stl or bracket_top_no_slot_v2.stl

I designed this in multiple parts to avoid the need for supports. Print with the fan intake hole down. Be sure to print the left bracket with a flat side down. The non-slotted top bracket can be substitutted for the slotted version. The slotted version provides a bit of adjustment if the fan mount tilt.

Assembly:

- Mount the top bracket to the fan housing using 2 M3 screws.

- Mount the left bracket to the fan housing using the 2 stock M3 cover mounting screws or your own M3 screws.

- If the screw holes are tight you may get bulges around them where the housing mounts to the metal bracket. If so, trim them and any other bumps using a razor of a file, so that the housing will mount flush with the metal plate.

- Do the following 2 steps in whatever order works best for you. I Installed an inline connector for my 4020 fan, so I install it first and then plug it in as the last step.

- Mount the fan to the fan housing. Make sure it is oriented so that it blows inward.

- Mount the stock part cooling fan (don't forget its 90° duct) or the 5015 fan duct to the right side of the fan housing.

- Mount the fan housing using M3 screws.

5015 Bracket and Duct

This part should also work with the stock metal fan cover.

Parts needed:

- A 5015 centrifugal fan. (The Ender 3 fans are 24v.)

- 3 M2 screws (I used the screws for the stock part cooling fan for this).

- 1 M3 x 6-8mm screw if using the optional bracket.

Parts to print:

- 5015_duct_v2.stl or 5015_duct_v3.stl

- 5015_lower_duct_v3.stl or 5015_lower_duct_v3_mod.stl if using duct v3

- duct_bracket_v2.stl

5015_lower_duct_v3_mod.stl hangs lower and also angles the air a bit lower.

No supports are needed for the main part. The optional small bracket should be printed with supports and oriented with the slot facing upwards.

Assembly:

- If you are using the printed main cooling fan mount, assemble it first as per above, but do not mount it to the printer.

- Mount the duct to the right side of the main cooling fan box using 3 M2 screws.

- Mount the entire assembly to the printer.

Optional Items

duct_bracket_v2.stl is an optional bracket that hooks to the hot end mounting plate. It gives the entire assembly a bit more stiffness. It won't work with the stock metal fan housing and would probably offer little to no benefit anyway.