Cut and Install the First Board Cut the end of the first baseboard at a 45-degree angle with the bevel facing the room; the side with the point goes against the wall. Position the board against the wall and fasten it to the wall plate and studs (as applicable) with a nail gun or hand-driven finish nails.
What angle do you cut baseboards to join?
Using a miter box or a power miter saw, cut the baseboard at a 45-degree angle. Before nailing it in place, mark the second piece the same way, and test for fitting. Use 1-1/4″ or 1-1/2″ brads to close the corner.
What is the best angle for a scarf joint?
The scarf-joint cuts have to be made at opposite ends of the pieces so that they join seamlessly. Most carpenters make their scarf joint angle between 15° and 30° degrees.
How do you cut a 90 degree corner trim?
To form a 90-degree corner angle, you want to set the miter saw to 45 degrees. Using a compound miter saw, which is made specifically to cut molding, will aid in making the cut perfect. Set the molding into the miter saw upside down and backwards in order for the cut to work.