Power tools are mysterious. You plug them in and with the pull of a trigger or the push of a button, blades start moving and bits start spinning. Did you know that you can open up your power tool and see what's going on inside? Usually the first time we do this is when a power cord breaks, either by accidental cutting, or by years of wear and tear. While you might think you need to send your tool off to a shop to be fixed (often costing more than the tool did originally), it is possible to buy replacement parts and fix a lot of things yourself. Two Hour Tutorials are short evening courses that delve into homeowner fix-it skills as well as carpentry and woodworking basics. Students under 18 may attend with parental permission