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NOV/DEC
2002 DEPARTMENTS What's
New EDUCATION ONLINE
CATALOGS MARK
V INFORMATION LINKS FEEDBACK Copyright
2002. |
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Installation
of stairway moldings To start with, I am assuming that your intention is to make some sort of pseudo raised panels.....either above or below the rail of a stairway.....running parallel with an existing chair rail that's also running up this stairway. First, you'll need to measure the angle of the stair rail (and treads) as they compare to the adjacent vertical wall with a sliding bevel, protractor or other similar tool. Based on our understanding of your situation, this angle is 54-degrees. (Its complimentary angle is 90-degrees minus 54-degrees -- or 36-degrees) Looking at the panels (or frames), as you face them going up your stairway, the top left corners of your frames (or raised panels) angle should therefore be 54-degrees. To cut your miters, you'll have to divide this by two and cut your miter angles at 27-degrees. This angle will be the same 54-degrees for the diagonally-opposed bottom right corners of your frames (or raised panel) angle. In order to create a complete frame or panel of 360-degrees, the two opposing frame corners (top right and bottom left) will be the previous angle (in our example case, 54-degrees) times two (or 108-degrees) subtracted from 360-degrees. This would equal 252 degrees. Then, divide this number (252) by two to arrive at the corner angle for each of the two remaining corners. In our case, this would be 126-degrees. As before, you would then divide this (126-degree) angle by two, to arrive at a 63-degree miter cut on each piece in each of these two corners. So....to summarize. For each frame, you would make four 27-degree cuts....and four 63-degree cuts....totaling 360-degrees.
MARK
V power requirements 15-AMPS. We recommend that you use a time-delay or slow-blow fuse or breaker...since start-up amperage can reach near 40 AMPS. Also, use wire rated for 15-AMPS - 20-25-AMP wire would be even better - minimum 12-gauge. |
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