3D Printed Solder Fume Extractor (HEPA Filter)

prusaprinters

<p>Simple solder fume extractor using a HEPA filter rather than an activated carbon.</p> <p>Why HEPA, see:<br/> <a href="https://www.sentryair.com/blog/solder-fume-control/comparing-solder-fume-extractors-its-all-about-the-filter/">https://www.sentryair.com/blog/solder-fume-control/comparing-solder-fume-extractors-its-all-about-the-filter/</a></p> <p>Here is a GIF of it in operation (as well as a rough schematic): <a href="https://imgur.com/a/SEjbnkx">https://imgur.com/a/SEjbnkx</a></p> <p>Also this is using a variable speed fan which is controlled by an ATtiny13. If you stay with this MCU you will have to write some efficient code to have both ADC &amp; PWM, so either:</p> <ol> <li>Use this tutorial: <a href="https://adnbr.co.uk/articles/adc-and-pwm-basics">https://adnbr.co.uk/articles/adc-and-pwm-basics</a></li> <li>Change MCU to something like an ATtiny45 or better</li> <li>OR if you are a madman you could just use a simple 555 timer circuit</li> </ol> <p>Part list:</p> <ol> <li>x1 HEPA filter, 115x115x12mm, I got mine from: <a href="https://goo.gl/GgAMQW">https://goo.gl/GgAMQW</a></li> <li>x1 High CFM fan, similar to DELTA PFB1212GHE</li> <li>x1 Fuse holder, something like <a href="https://goo.gl/aDMRGY">https://goo.gl/aDMRGY</a></li> <li>x1 5x20mm 1A fuse</li> <li>x1 Power jack, something like <a href="https://goo.gl/KA4by6">https://goo.gl/KA4by6</a></li> <li>x1 Power switch, something like <a href="https://goo.gl/qEp3Jj">https://goo.gl/qEp3Jj</a></li> <li>x1 10K potentiometer, something like <a href="https://goo.gl/jgKCEK">https://goo.gl/jgKCEK</a></li> <li>x1 ATtiny13 or similar</li> <li>x1 10K resistor</li> <li>x1 LM7805 or similar</li> <li>x2 10uF electrolytic capacitor, at least 25V</li> <li>x1 100nF ceramic capacitor, at least 15V</li> <li>A bunch of wire and a single piece of veroboard</li> <li>UPDATE: 130x130x10mm activated carbon filter, like <a href="https://goo.gl/SwdERG">https://goo.gl/SwdERG</a><br/> UPDATE: "Carbon-filter-holder_v10a.STL" houses a carbon activated filter, so not the extractor has 2 step filtering</li> </ol>