I have just finished fixing the kitchen cupboards to the wall and have come to fixing the cornice on the top to finish them. Can I cut them at the right angles.. no I can't. I have access to a chop saw which can cut 45 degree angles and at a 45 degree slant as well. I've tried a few combinations but the joints never seem to fit. Does the cornice have sit in the saw the same as it sits on the top of the cupboards?. The majority of the angles are 45 degress with a couple of odd ones. If I can work out how to cut the 45's I reckon I can work out the others. There must be a simple solution. Can anyone help?

Angles for Cornice