Solder Fume Extractor (2x 60mm fans)

thingiverse

So I decided to put my extra 60mm fans to use and build a fume extractor from scratch. This project is surprisingly small and comes with an easy-to-use on/off button, a light indicator, and a compact power adapter. Although it's not the most straightforward build process, it's still manageable for anyone willing to put in some effort. I did have to do quite a bit of soldering and there was a tight squeeze getting the carbon filters in place, but overall it's not too complicated. With only two main components, you shouldn't have any trouble figuring out how everything goes together. If you're thinking about criticizing my decision to mount the electronics on the cover, I completely agree with you - that's definitely not the most ideal setup. However, I had already printed the cover and didn't want to waste all the material by reprinting it. You can find a video of the project here: https://www.youtube.com/watch?v=5cPBAVjJ8IM&feature=youtu.be When printing the duct, I laid the small opening flat on my bed. I'm not sure if this is the most efficient way to do things since I did use supports, but overall it turned out pretty well and I have no complaints. There are pre-drilled holes for mounting the fans, but once everything is put together, you can skip screwing them in altogether. In addition to using a carbon filter behind the fans, I also added another layer inside the duct in front of the fans. Plus, I threw in a small filter right at the opening for good measure. Here's what you'll need to build this fume extractor: * 2 x 60mm fans (mine are 15mm thick) + You can use either of these links - if you want ones that are only 10mm thick, it would make it easier to get the carbon filters in place, but that's not necessary. + https://www.amazon.com/gp/product/B00N1Y4HRO/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=1 + https://www.amazon.com/Security-01-Bearing-Brushless-Cooling-AV-F6015MB/dp/B072MH2ZG9/ref=sr_1_4?ie=UTF8&qid=1550722040&sr=8-4&keywords=60mm+fan * Carbon Filters: + Choose whatever you like - I used these: https://www.amazon.com/gp/product/B07D5SBPN8/ref=ppx_yo_dt_b_asin_title_o00__o00_s00?ie=UTF8&psc=1 * Power adapter/supply: + You'll need 12V for this project - I actually used a 13.8V adapter from an RC plane that I have. + https://www.amazon.com/gp/product/B01HCRUGPW/ref=ppx_yo_dt_b_asin_title_o01__o00_s00?ie=UTF8&psc=1 * LED: + Just use any 5mm LED - this is entirely optional, and you could just fill the hole with anything instead. * Switch: + I ordered a big pack of switches - the slot is designed for these: https://www.amazon.com/gp/product/B01N2U8PK0/ref=ppx_yo_dt_b_asin_title_o02__o00_s00?ie=UTF8&psc=1 * Resistors: + Assuming you're using all the parts I've already listed, you'll need to drop the voltage a bit if you want an LED (if not, ignore this part). + With a current draw of 20 mA, you'll need to drop about 10V from the power adapter in order to power the LED. That means you need about 500 ohms of resistance. I used 3 x 330ohm resistors (2 in parallel in series with another 330, ends up at 490 so close enough). This resistance might change if you use a different color LED. In terms of putting everything together, there's really not a lot of space for wires. My fan's connectors had been cut, so I just soldered them all together. There is not a lot of room inside the device to run the wires with good clearance, so I'd suggest soldering them. I included a diagram of the wiring, where the fans are represented by DC motors. Hopefully it's not confusing - I feel like it's relatively straightforward, but if you have any questions feel free to ask. If you made it this far, thanks for reading!