Making a Wood Frame
I wanted to make a wood frame for a mirror for my bathroom. I purchased chair rail molding that I like and mitered cut the corners (45 degrees) using a compound miter saw.
The measurements were suppose to be 25.5" long and 21.5" wide. But I ended up with a gap in the bottom piece when I put the pieces together. The bottom piece seems to be off by 1/4" from the top but the top is square and has a tight fit.
What am I doing wrong?
Also, how do you mark your wood at a 45 degree angle as a cutting guide?