Join Date: Feb 2010
Location: Whittier, CA. USA
If it is just cove molding place it in the saw as it would be on the wall/ceiling. Wall side should be against the fence & the ceiling would be on top pointing out towards you. You would be looking down at the ceiling side as you make your cut. Set the saw miter to the right 45º or to the left 45º. Blade should be straight up & down & not at a bevel. For a left side miter swing the saw 45º to the right & the opposite for the right inside miter. This is for cove that has two flat surfaces on the back side.
If it is cut for crown (machined with a 38º/52º bevel on top & bottom of molding) then being only 3/4" I would place it in the saw upside down at the angle it sits in place. This is known as upside down & backwards. When you cut the 45º on the left side of your piece it will actually be the right hand cut as it sits on the wall. You might find videos on YouTube. Placing the piece at the spring angle it sits on the wall will give you a compound cut so you only have to cut the miter & not have to lay the saw blade over for a bevel.
Just because you can, doesn't always mean you should!
Last edited by jlord; 05-26-2011 at 05:16 PM.