My wife wanted a lite above the new gas range, so I used 5 sides of a hexdecagon polygon (16 sides) to bring the front of the new cabinet out to allow for the new Halo Four Inch LED Down light.

Here's a drawing of the plan view of the hexadecagon cabinet top. As you can see from the drawing there were 7 different corner angles I had to calculate the miter angle and bevel cut angles for the crown molding.

The finished product was/is suppose to look like this 3D drawing of the 3 1/4 colonial crown molding. (Just got to love the follow me tool in Google SketchUp for the crown molding drawing.)

Here are the steps to use the Rafter Tools calculator to find the crown molding miter angles and saw blade bevel angles.

Step 1:

Scroll left in the Rafter Tools calculator to the

**Crown Molding Angles**calculator. Then click on the drawing to open the Crown Molding Calculator.
Step 2: Scroll down to the bottom of the page.

Step 3: Click on the

**Calculate Spring Angle**button.
Step 4: Enter the rise and run of the crown molding. The 3 1/4 colonial crown molding I was using had a

**Crown Molding Run**of 1 15/16" and a**Crown Molding Rise**of 2 5/8" . You will have to convert the inches to decimals. After you enter the crown molding run and rise in decimal inches press the**Calculate Crown Spring Angle**button. The calculator will then display the crown molding spring angle. Press the green line to have the crown molding spring angle transferred back to the**Calculate Crown Molding Angles**calculator.
Step 5: Enter the first corner angle. 135.00° for the first corner.Then press the

**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 135.00°.**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 132.00°.

**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 154.00°.

**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 157.50°.

Step 9: Enter the first corner angle. 151.90° for the first corner.Then press the

**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 151.90°.Step 10: Enter the first corner angle. 129.20° for the first corner.Then press the

**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 129.20°.

Step 11: Enter the first corner angle. 134.40° for the first corner.Then press the

**Calculate Crown Molding Angles**button to display the crown molding miter and saw blade bevel angles for the spring angle of 36.43086° with a corner angle of 134.40°.

At any time you can click on the **Email**button to send yourself an email of the calculated results for the crown molding angles.

Nice blog! you have written wonderful content. It's very useful for me.

ReplyDeleteInteresting article and one which should be more widely known about in my view. Your level of detail is good and the clarity of writing is excellent.Thanks so much! What you've done is beautiful!

ReplyDeleteFiberglass Columns

The steps you had written on this blog are really very helpful for doing the Crown Molding and give your wall a bit more dramatic and beautiful look.Thank you.

ReplyDeleteCut crown molding