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CASING OUT A WINDOW

There are lots of ways to trim out a window, most of which work. Here is how I was taught from the master carpenter I worked under.  

First of all when you start out with the window you want to cut back the drywall from the window. You want to make sure that the drywall is cut back on an angle and there seems ample room between the window and the drywall. This procedure will help in the installation of the casing later.

Next take the casing to your miter box and cut a 45 degree miter on  each piece. Make all your cuts one way for 4 pieces and then do the same for the other side. Return to the window and using the same four holes to reinstall the casing on the window. At this point the casing should “roughly” fit.

Starting in the upper left hand or right hand corner bring the two pieces of casing together with your hands. If you notice that the joint doesn’t fit perfectly if you push the casing against the wall and squeeze it together you need to make an adjustment. Typically the outside edge of the 45 degree angle will hit but the inside will be opened up. Take one piece back to the saw and adjust this by cutting it slightly less than 45 degrees such as a 44 1/2 degree miter. Make sure you don’t cut any

 



more off on the inside of the casing. Keep doing this until it fits even if you have to go back to the saw a couple of times, its worth it. If you really want to get fancy you can start to adjust the angle of the saw as it cuts through the casing. You can have the miter cut through at 88 degrees on an 44 1/2 degree angle. This is where learning geometry finally pays off!

After all the pieces are cut and are fitting properly start in the same corner that you just refined and put a bead of glue on the joint. If you are staining the wood be careful not put to much on. Now just nail

 

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