Casing Trim Cutting Tips and Tricks
by djpolymath in Workshop > Home Improvement
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Casing Trim Cutting Tips and Tricks
![Trim and Casing Cutting Tricks](/proxy/?url=https://content.instructables.com/FO2/L1NS/K1UYYN0N/FO2L1NSK1UYYN0N.jpg&filename=Trim and Casing Cutting Tricks)
This instructable describes one geometric method of installing door and window casing
Mark
![20190907_113240.jpg](/proxy/?url=https://content.instructables.com/FEP/4ZYL/K1UYYMWT/FEP4ZYLK1UYYMWT.jpg&filename=20190907_113240.jpg)
![20190907_113243.jpg](/proxy/?url=https://content.instructables.com/F73/RPT8/K1UYYMWU/F73RPT8K1UYYMWU.jpg&filename=20190907_113243.jpg)
![20190907_113125.jpg](/proxy/?url=https://content.instructables.com/FRD/TUFH/K1UYYMWS/FRDTUFHK1UYYMWS.jpg&filename=20190907_113125.jpg)
![20190907_113319.jpg](/proxy/?url=https://content.instructables.com/FSV/J2Q9/K1UYYMWV/FSVJ2Q9K1UYYMWV.jpg&filename=20190907_113319.jpg)
Mark the door corners where the casing will meet and then mark the height on the vertical casing.
Cut
![20190907_113340.jpg](/proxy/?url=https://content.instructables.com/FJK/DZ2P/K1UYYMWW/FJKDZ2PK1UYYMWW.jpg&filename=20190907_113340.jpg)
![20190907_120249.jpg](/proxy/?url=https://content.instructables.com/FM9/R7I8/K1UYYMWL/FM9R7I8K1UYYMWL.jpg&filename=20190907_120249.jpg)
![20190907_114655.jpg](/proxy/?url=https://content.instructables.com/FG9/E37S/K1UYYMWY/FG9E37SK1UYYMWY.jpg&filename=20190907_114655.jpg)
![20190907_115050.jpg](/proxy/?url=https://content.instructables.com/FV0/Q6BB/K1UYYMX1/FV0Q6BBK1UYYMX1.jpg&filename=20190907_115050.jpg)
Cut 45 degrees at the marks on the vertical casing pieces
Cut Top
![20190907_115322.jpg](/proxy/?url=https://content.instructables.com/FLW/KUL6/K1UYYMX2/FLWKUL6K1UYYMX2.jpg&filename=20190907_115322.jpg)
![20190907_115343.jpg](/proxy/?url=https://content.instructables.com/FT9/4QJY/K1UYYMX5/FT94QJYK1UYYMX5.jpg&filename=20190907_115343.jpg)
Cut a 45 on one side of the top piece then hold up to the vertical miter to see if the angle needs to be modified.
Re-cut
![20190907_115407.jpg](/proxy/?url=https://content.instructables.com/FF9/WSVF/K1UYYMX6/FF9WSVFK1UYYMX6.jpg&filename=20190907_115407.jpg)
![20190907_115455.jpg](/proxy/?url=https://content.instructables.com/F9U/JJIB/K1UYYMVO/F9UJJIBK1UYYMVO.jpg&filename=20190907_115455.jpg)
Slightly adjust the saw and recut the miter of the top piece so that the miter is perfect.
Opposite Side
![20190907_115622.jpg](/proxy/?url=https://content.instructables.com/FW1/R95T/K1UYYMVP/FW1R95TK1UYYMVP.jpg&filename=20190907_115622.jpg)
![20190907_114728.jpg](/proxy/?url=https://content.instructables.com/FC1/J437/K1UYYMWZ/FC1J437K1UYYMWZ.jpg&filename=20190907_114728.jpg)
![20190907_115953.jpg](/proxy/?url=https://content.instructables.com/FDT/OI53/K1UYYMWI/FDTOI53K1UYYMWI.jpg&filename=20190907_115953.jpg)
Cut a 45 on the top casing for the opposite side, but don't cut to length. Also make an adjustment until the angle is correct. Leave the saw at that angle.
Cut to Length
![20190907_115829.jpg](/proxy/?url=https://content.instructables.com/F0E/KDOD/K1UYYMWG/F0EKDODK1UYYMWG.jpg&filename=20190907_115829.jpg)
![20190907_115646.jpg](/proxy/?url=https://content.instructables.com/FB7/HMBF/K1UYYMVQ/FB7HMBFK1UYYMVQ.jpg&filename=20190907_115646.jpg)
With the saw at the correct angle, cut the top piece to length.
Dry Fit
![20190907_115929.jpg](/proxy/?url=https://content.instructables.com/FXJ/G54Z/K1UYYMWH/FXJG54ZK1UYYMWH.jpg&filename=20190907_115929.jpg)
![20190907_115648.jpg](/proxy/?url=https://content.instructables.com/FZY/C2KD/K1UYYMWF/FZYC2KDK1UYYMWF.jpg&filename=20190907_115648.jpg)
Dry fit the miter.
Nail
![20190907_120542.jpg](/proxy/?url=https://content.instructables.com/FCW/WRKD/K1UYYMWM/FCWWRKDK1UYYMWM.jpg&filename=20190907_120542.jpg)
![20190907_120650.jpg](/proxy/?url=https://content.instructables.com/FOO/M026/K1UYYMWN/FOOM026K1UYYMWN.jpg&filename=20190907_120650.jpg)
Nail in place
Complete
![20190907_122409.jpg](/proxy/?url=https://content.instructables.com/FQE/3Y0C/K1UYYMWO/FQE3Y0CK1UYYMWO.jpg&filename=20190907_122409.jpg)