tool box hoover vaccum

This is an hoover I made to fit in my small carry tool box for picking up swarf when drilling holes in aluminium cars at work. It uses a 28,000rp mobile helicopter motor and two 3.7 lithium batteries, with a fine mesh from an old juicer as a filter to stop bits going through the fan, it is my own design as I tried a lot of fan designs to get the correct one to achieve the most suction from a small hoover and the batt life lasts all day. I think it works well.