How do i cut base moulding for an outside corner greater than 90 degrees with a miter saw?
Rotate or flip the project and do a negative 90. EXAMPLE: your cut is 120 degrees, flip the project and cut it at 30 degrees. Technically nearly every type of cut would be less than 45 degrees. 45 degrees is 1/8th of a full circle (360). Thus you can cut any miter on a 45 degree limited miter saw. http://www.ehow.com/how_4850832_cut-obtuse-angle-miter-saw.html has pictures for a 120 degree project. Basically you are just turning the project upside down and cutting at 30 degrees (you will have to turn the project around as well 😉 ) Of course when cutting this way leave a wee bit of material on the project and use a sanding box to reduce at the installation area – sand off a wee bit and dry fit until you get that snug, perfectly flush joint.