Simple Soldering Fan (120mm) (usb-c powered)

Tldr: a small usb-c power fan to exhaust soldering fumes. Inspiration.

Parts List: (search the bit in parenthesis if the links are dead)

• PWM Controller (PWM Motor Speed Controller Automatic DC Motor Regulator Control Module Low Voltage DC 1.8V to 15V 2A)
• USB-C PD Power Supply (Type-C QC AFC PD2.0 PD3.0 to DC Fast Charge Decoy Trigger Polling Detector USB-PD Notebook Power Supply Change Board Module Support 5V 9V 12V 15V 20V Fixed Voltage Output) (Set to 12V)
• Noctua 120mm 3000rpm Fan
• Filter (Solder Extractor Filter Activated Carbon Replacement)
• Threaded Insert (M3 x 4 x 5mm)
• Threaded Insert (1/4-20" x 6 x 8mm)
• Bolts (M3 x 6mm)
• PC Fan Screws

See my blog post for more details.

• I left the bottom open to accommodate different electrons.
• The internal electrons are simple hot glued to the inside of the case. 
• The hole on the side of the base is for the ¼-20" threaded insert that I linked.

Assembly:

1. Melt the M3 threaded inserts into the four corners of the base 
2. Solder the positive and negative of the fan the output of the pwm controller
3. Insert the fan into the base (Noctua fan leave rubber feet on) and mount the fan to the face of the base using four fan screws
4. Melt the ¼-20" threaded insert into the side of the base
5. Solder the positive and negative output of the usb-c power supply to the intput of the pwm controller
6. Put the pwm dial through the hole in the face and mount it using the nut on the other side
7. Hot glue the pwm controller and usb-c power supply into the case such that the usb-c port lines up with the back
8. Place to filter behind the fan (it's bigger than 120mm but will fit)
9. Mount the back to the case using four M3x6mm bolts

Printer Settings I Used:

• Printer: Elegoo Neptune 4
• Filament: PLA +
• Infill: 30% (Cubic Subdivision)
• Support: Yes for the case because of the hole in the side but you might be able to get away without supports.