Converts HFT 3-In-1 Electric Blower Vacuum Mulcher to 3 Micron Dust collector. Use with: http://www.thingiverse.com/thing:930807. Adapter plate and nozzle converts HF Tools $40 yard blower/vac to 3 micron dust collector. Plywood plate is optional; planned to use it to mount to a wall or affix to cyclone dust separator. This combination moves more air than a 6 hp shop vacuum and does not have the high pitched whine of one either. Used on the lower setting. Designed for standard 2.5" vac hose. http://www.harborfreight.com/3-in-1-electric-blower-vacuum-mulcher-62337.html http://www.amazon.com/gp/product/B002DSC09Q?psc=1&redirect=true&ref_=oh_aui_detailpage_o07_s00Printed at .2 layer, 95% fill. Requires, qty 4, 1/4-20 bolts and nuts to mate the adapter plate and nozzle together. Simply clip it in to the blower unit. There is a "vibration nub" on the nylon blower wheel of the HF tools blower/vac. If you grind it off it will run smoother. Probably there to make it vibrate slightly so you know it is running.