Has anyone tried using a quiet 12v blower like the following? http://www.seaflo.com/en-us/product/detail/663.html Last thing that I need for my blast furnace build is a quiet-ish blower. Full power shop vac is obnoxiously loud. I have a few options. 1. Plug shop vac into harbour freight router speed controller. Run vac slower, quieter. 2. Put shop vac in garage and run something like 3 inch flexible duct hose from garage, out window, and down to furnace. Put ball valve in line to control air volume sent to furnace. 3. OR ... try out one of these 12 volt bildge blowers. Still need to control air flow with rheostat or inline dump valve. Edit: Wife suggested that I specify that thread title was not meant to be a double entendre. She realized this because I'm "not really that funny", in her opinion. Ahhh, wedded bliss.