The most common baseboard corner is an inside 90 degree corner and the easiest way to install baseboards to fit this corner is to cut two pieces of the baseboard at the edges and at an angle so.
Cut flooring trim at angles.
If you need to measure a mitered angle that s other than 90 degrees you could hunt around for your protractor but there s a better way.
Cut with the piece standing flat against the miter saw fence.
You will need a miter saw to cut the trim at an angle and form a corner.
The video above provides a great cheat sheet that makes it even easier for you to identify exactly what angle you need to cut.
Cut the 45 degree angle on both sides from the short to short direction.
Measure along the wall and floor junction from the first corner to the first cut point.
Slice a trim board at a 45 degree angle.
The first step in cutting trim is going to be identifying the angle you need to cut.
Just an fiy take on the same principal that chris uses there s a youtube video that shows a master carpenter who basically threw out his angle finder crown molding protractor in lieu of a roll of paper drywall joint tape to figure out angles a link is easy to find by typing how to measure for crown molding without tools but basically the idea is cut 2 strips of joint tape.
The most popular angles for interior trim are 90 and 135 degrees and each of those angles can be straight on or with a bullnose.
Record this measurement with an additional note detailing if the left and right sides of the trim are.
For the initial angle turn the base clockwise until the saw points to the 45 degree angle mark which you can see on the angle gauge beneath the base.
Measure across top of door and on the inside and add 3 8 inch to the measurement.