Hello to the awesome Patreons, this is a follow up video from the dust prevention video posted a couple of months ago. I had the opportunity to make a huge mess in the garage and thought what better test for the dust extractors than turning the garage into a big dust bowl. And a test it was! In the video I'll show you the results and how well the dust extractor performed as well as show you the upgrades I made to each unit to give them a better chance at catching dust. P.S. I also made a change to the voltage I'm using to drive the fans, they were previously running at 3 volts, which was fine however the start voltage for each fan is 5 volts, so while they run fine at 3 volts they still need a minimum of 5 volts to get started. So to make things easier for when I connect and disconnect each fan I'm now running the fans at 5 volts, which increases the total running cost to about $14 per year but they also have a slightly higher airflow. The higher airflow actually works better with the more dense HEPA filters, more airflow is needed to push air through the more dense filter fibres. I hope you enjoy watching.