4 x 10 vent fan boost

thingiverse

So I started buying parts knowing the last time I looked at a commercial vent booster it cost $100, but now it's dropped to just $60 and it even has air detection and fan control. You can check out this one on Amazon: https://www.amazon.com/AC-Infinity-Register-Thermostat-Control/dp/B0792QR5YT/ref=sr_1_2?keywords=AC+Infinity+AIRTAP+T4%2C+Quiet+Register+Booster&qid=1562095135&s=gateway&sr=8-2 However, some people are still complaining about the noise it makes, and let's be honest, the DIY version is still half the price (and super customizable). So I've included both a STEP file and individual STL files. You're going to need Sixteen 8-32 x 1-1/2 screws, equal amount of nuts, three fans, and a speed controller. You can check out these on eBay: https://www.ebay.com/itm/AC-to-DC-3-12V-2A-Adjustable-Power-Supply-Adapter-Motor-Speed-Controller-US/153522995098?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 And: https://www.ebay.com/itm/Adaptec-ACC-9700-3-x3-80mm-3-Pin-Computer-Case-Fan-5000-RPM-2127300/300469881915?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 And these on McMaster: https://www.mcmaster.com/90480a009 And: https://www.mcmaster.com/90272A203 I bought three fans off eBay, each one running off 12v @ .25A (the controller can handle up to 2A). Each fan can run up to 5,000 rpm with a 53CFM (so 160CFM total output, which is technically better than the 100CFM commercial version on Amazon). I haven't built this yet but I'm confident in the design. After assembly, I'll update you. You should be able to wire up all three fans up to the controller (Red and black, yellow isn't needed). Each grill half should take about a 3 hour print job, roughly $0.70 in material each. Support shouldn't be needed. There are nut pockets included so you should only need a phillips screwdriver to build. I split it in half because I assume most people don't have a printer big enough to print an 11" long part.