How To Figure Angles For Cutting Wood

Accumulative angles should add up to 360 degrees.

How to figure angles for cutting wood. Double-check them to ensure the angle is correct for your project. General contractor Tom Silva shows a quick and accurate way to cut perfect-fit mitersSUBSCRIBE to This Old House. For example if the height is 300 and the displacement is 400 the math results in 300400 or 075.

Cutting angles on wood takes a little math but dont worry if your math skills are a little rusty. Use it to find angles mark cutlines and as a crosscut guide to keep your. To calculate the angle of the lower left corner of the white triangle divide the height by the displacement.

Once thats folded in half you can take the tape to your miter saw put it against the fence and swing the blade over the fold. Figure out what kind of angle you want to cut on the wood. If the joists or studs are on 16-in.

The Pitch and the Run. Heres how to figure out those angles for trim with items you already have handy in your home. If the bay is 45 degrees enter 45 and press the PITCH key.

And press the RUN key. In this video I show how I find inside and outside angles and cut them on my miter saw. If youre doing something like setting posts on a slanted surface youll likely need to measure the exact angle at which to cut their base so that they stand perpendicular with the ground.

Spirit vials help you check for level as when establishing the angle to cut siding where it meets a roofline. Several smaller angles can go together to create the total 360 degrees. Now what weve got is a replica of this outside angle that we need to fold in half.