Inspired by Steven Bennett's YouTube video where he made one of these from scratch for use with Makita batteries:

https://www.youtube.com/watch?v=YUG23h0OeQI

I'm finding myself doing more and more electronics soldering, and decided it was time to figure out fume extraction. I didn't want to spend hundreds on a whole extractor product, but didn't want to go without one either. Some half-baked home built solutions didn't perform how I wanted them to, but watching the video above inspired me to build a Ryobi equivalent that could vent outside.

Turns out Ryobi makes a clip-on fan that was the perfect starting point, which is what this thing attaches to:

https://www.homedepot.com/p/RYOBI-ONE-18V-Cordless-4-in-Clamp-Fan-Tool-Only-PCF02B/315493213

This thing replaces the green casing on the fan, as shown in the photos. This is combined with the magnetic 4" vent attachment by jake2237 (see the remix), allowing you to easily attach and detach a flexible vent hose while still retaining its functionality as a fan and (most of) the tilting and rotation.

You will need the fan, 8 x round 5/16" x 1/8" rare earth magnets, and a way to press them into the printed pieces. The magnets can be found at Harbor Freight (item 67488), and a bench vice (+ a drop or two of super glue for extra hold) worked for me to press them in.

Instructions

1. Print the fan attachment, as well as the duct side of jake2237's vent cover.
2. One magnet at a time, drop in 1-2 drops of super glue and press the magnets into the openings on both pieces, making sure the magnet polarity is the same for all holes before pressing.
3. Use a T8 screwdriver to remove the six screws holding the fan body together.
4. Once disassembled, there is a small grey plastic piece covering the wires leading to the fan motor. You may want to consider gluing this down for easier re-assembly, but this is optional.
5. Attach the fan attachment onto the fan using the original 6 screws.