Take your cornice board down and either clean the existing cover with a damp cloth or remove it by cutting it away with scissors.
Cutting cornice flat.
So the crown molding sits upside down on the saw.
If you are a beginner start out with in position cutting.
This may have a 10 inch or a 12 inch blade note.
5 lay your fabric on a clean flat surface with the printed side down.
A 12 inch compound sliding miter saw or radial arm saw is required for crown molding of more than 6 inches tall.
One way to cut crown molding it to use the 90 degree intersection of the table and fence on a miter saw to play the part of wall and ceiling.
Flip the material around to cut both ends of the inside and outside corners.
Top of molding doesn t have decorative edge.
When doing this the fence plays the part of the wall and the table plays the part of the ceiling.
You will use crown tables or the bosch digital protractor that will calculate the compound angles for you.
You must flip the material around to cut both ends of the inside and outside corners.
The left leg should touch the end of the length of cornice allowing for the width of the blade.
See the first photo.
Cutting coving moulding cutting in a mitre box use a mitre box to accurately cut the corner mitres make sure that the mitre box is large enough so that the two edges of the coving can fit flat against the bottom and side of the box see right.
Sometimes the measure mark is against the fence and harder to see.
If you re using a 10 inch blade you will be able to cut cornice up to 4 inches tall while a 12 inch miter saw can cut it up to 6 inch tall molding.
How to cut crown molding.
In my case i allowed for the scallops so placed the template off the end cut making sure the saw blade lies flat against the template s left leg.
Compound method flat molding laying with broad back surface down flat on saw table.
Large crown may have to be cut on flat.
Cutting crown on flat is a more precise since it can be held straight on the miter saw easier.
This video shows how to cut internal and extern.
Set saw miter and bevel angles from table and diagrams below.