Solder Fume Extractor (2x 60mm fans)

Description

So I had some extra 60mm fans lying around from upgrading my CR-10, and decided to use them to build a fume extractor. It's pretty small, and just has a simple on/off button, light, and power adapter. It's not the easiest thing to put together. I did a lot of soldering, and it's a tight fit with the carbon filters, but it shouldn't be too much trouble to figure out. After all, it's only 2 parts. If you want to criticize the fact that I put the electronics on the cover, I completely agree. I should've put the little box on the duct, but I had already printed it because I was excited, and I wasn't about to reprint it and waste all the material. https://www.youtube.com/watch?v=5cPBAVjJ8IM&feature=youtu.be I printed the duct with the small opening flat on the bed. I don't know if that's the most efficient way, because I did use supports. But overall it came out pretty good, and I have no complaints. There are holes for mounting the fans, but once all the pieces are together, there's really no need to actually screw them in. Also, in addition to using the carbon filter behind the fans, I also put a layer inside the duct, in front of the fans. I also put a small filter right at the opening. Bill of Materials: 2x 60mm fans (mine were 15mm thick): Any of the following links would be fine. If you want to use ones that are only 10mm thick, it would definitely make it easier to get the carbon filters in, but thats not necessary. The first link is the fans I have, but the second is cheaper. So do whatever you want. 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: This is up to you, choose whatever you want. I used the following: https://www.amazon.com/gp/product/B07D5SBPN8/ref=ppx_yo_dt_b_asin_title_o00__o00_s00?ie=UTF8&psc=1 Power adapter/supply: Gonna need 12V for this. 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 also is entirely optional. There's no reason you need to have an LED, you could just fill the hole with anything. 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 use all the parts I've already listed here, you're going to need to drop the voltage a bit if you want an LED (if not, ignore all of this). with a current draw of 20 mA, you're gonna 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 3x 330ohm resistors (2 in parallel in series with another 330, ends up at 490 so close enough). This resistance though might change if you use a different color LED. In terms of putting the whole thing 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 really 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!

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