CROWN MOLDING CALCULATOR Version 2.03

(tested with Netscape Navigator 4.05)

The calculated or interpolated values will appear in the boxes in the table when the one of the 90...compliment buttons is pressed. The pinkish values are used on most saws. The predominant slope angle is 38 deg.

Slope Angle from Wall in Degrees DEFAULT: 38

After entering the slope angle, the angle of the molding with the wall, above, enter the wall angle below and then push the button according to how the angle was measured in Degrees

Angle Measured measurement method assumed
outside corner inside corner inward wall bend crosscut scale crosscut protractor bevel scale bevel included angle
360 0 180 90 0 90 0
315 45 135 56.0670 33.9320 46.7210 43.2780
270 90 90 31.6190 58.3810 33.8629 56.1371
225 135 45 14.3064 75.6936 17.5512 82.4488
181 179 1.0 0.307 89.7 0.396 89.6
180 180 0 0 90 0 90
135 225 -45 -14.3064 104.3064 -17.5512 107.5512
90 270 -90 -31.6190 121.6190 -33.8629 123.8629
45 315 -135 -56.0670 146.0670 -46.7210 136.7210
0 360 -180 -90 180 -90 180
O = 360 - I I = 180 - B B = 180 - I R = 90 - M M = 90 - R V = 90 - A A = 90 - V

outside: For outside corners lay a board against each wall and scribe a line on one board. Measure the angle from the wall to the other board edge and enter that number and then press the outside button.

90: Hold a board against one wall and hold a square or another board with a 90 degree corner against the other wall and scribe a line on the first board using the edge of the 90 degree board. Enter the angle between the wall and the edge of the second board and press the 90 button.

45 triangle: Hold a board against one wall and hold another board with a 45 degree corner against the other wall and scribe a line on the first board using the edge of the 90 degree board. Enter the angle between the wall and the edge of the second board and press the 45 button.

60 triangle: Hold a board against one wall and hold another board with a 60 degree corner against the other wall and scribe a line on the first board using the edge of the 90 degree board. Enter the angle between the wall and the edge of the second board and press the 60 triangle button.

included: The included angle includes all of the object between the two sides.

inside: The inside angle is 2*pi minus the included angle. It is the angle between the walls. The outer scale on the SkillTech D9 M40760 Angle Finder, HempeNewBerlinWI

interpolate: The angle between the normal vectors to the two walls, or the angle that the wall bends, positive for inside. For outside corners lay a board against each wall and scribe a line on one board. Measure the angle from the wall to the other board edge and enter the negative of that number and then press interpolate.

compliment: Enter the compliment of the angle that the wall bends.

...use the crosscut scale and bevel scale and click here to place the piece on the saw...



...derivation...
...table...
...example...
...calculators with the concurrentinverse...
(C)2000 Wm.C.Corwin billc@issi1.com

email to billc@issi1.com your fax number for a sketch of the angle definitions

(c)2000 copyright Wm.C.Corwin billc@issi1.com
contact Wm.C.Corwin about rights to link and advertizing
www.byeless.com www.liftbar.com www.issi1.com/corwin/potpourri.html
2000 February 18 -->
hits since 2000 February 16