Powerful desktop solder fume extractor with big 140 mm fan and two 10 mm filter pads

Tired of the smelly solder fumes floating around? This is the answer. A solder fume extractor with a powerful 140 mm fan. 

This solder fume extractor is designed to carry a big 140x140x25 mm fan. I used the powerful Noctua NF-A14 with 3000 rpm and 269,3 m³/h airflow in combination with a PWM controller. Two 130x130x10 mm active carbon pads are integrated and filter the extracted air. A outlet for  a 150 mm suction hose is also incluced.  

Construction:

Print out the 3D parts, see printing instructions. Add the M3 thread inserts to the fan holder (4x) and filter holder (8x), see pictures. Be sure to insert the threads in the inner holes on the right side.

Electronic part:

Remove the fan connector pins from controller circuit and the two solder cabels. We will directly solder the fan cable to the circuit. Remove the rubber parts from the edges of the fan. Insert the fan and the controller circuit in the fan holder. Be sure that the blow direction of the fan is pointing out of the fan holder. Measure the fan cable length to controller and shorten the cable. Remove the fan and controller from the fan holder. Solder the fan cables to the four deticated controller circuit pads. Insert the nut from power plug to fan holder and screw the power plug in. Double check plus and minus pole of power plug cables. My parts had a red cable for the plus, which was connected to the inner pin of power plug. Be sure that the power supply connector has the same orientation. Solder the power plug cables to deticated circuit pads. 

Assembly:

Place the prepared fan holder on the filter holder, the inner thread should face the fan holder. Cover the fan holder with the outlet. Add washers to the four M3x40 screw. Start with one hole, put the screw inside and align the fan with screw. Do not fully tighten the screw at the moment. Next put a prepared screw in the opsite hole and align again the fan with screw. Insert the remaining screws and tighten them. The M3x8 goes into the hole above the electronics. Cut the edges (~1 cm) of the two filter pads and place the pads into the filter holder. Mount the ring with four M3x8 screws with washers onto the filter holder. Mount the feet with three M3x8 screws with washers onto the bottom of the fan holder part. Congrats, you are done!

Print instructions

Printed in PETG with standard Prusament settings on Prusa MK3S+ printer

Slicing settings:

Infill

15 %

Supports

No supports

Brim

No brim

Mesh

Use the separate modifier objects to generate honeycomb mesh for ring, outlet and fan holder. Modifications are: infill 10 % honeycomb, no bottom and top solid layers (see pictures).

Perimeters

4 perimeters for outlet, 2 for all other objects.

Print settings:

Filament
PETG - I used Prusament PETG Prusa Galaxy Black

Nozzle
0.4 mm

Layer thickness
0.2 mm

Temperatures
Extruder: 250 °C (1st layer 240 °C)
Bed: 90 °C (1st layer 85 °C)

Additional parts needed: