Picture frames and boxes require joining two boards to create a right angle. The cleanest way to do that is cutting 45 degree angles at the end of each board, called a miter cut. Here’s the formula to ...

Dear James: I like the look of crown molding for my dining room, but I am having trouble getting the corner cut for a good fit. If you already installed the door and baseboard moldings, you probably ...

A technician often has to sketch or design ductwork and the other parts of an HVAC system. Sometimes you have to sketch the room or building you are working with. This means working with lines, angles ...

During one of our never-ending technical discussions, Jim Grubbs at Jim Grubbs Motorsports (JGM) suggested that we take a look at the flow difference between 30- and 45-degree valve seats. While ...