How do I cut quarter round to be joined to another piece of quarter round at an angle of about 140 deg.?

Question

I am working on stairs and I want to add quarter round along the wall going up the stairs and at the landing which is about 140 degree angle. I can't get the quarter round to join correctly where the stairs and the landing meet.

Answer 1

divide 140 in half and make both cuts at 70 degrees.

Answer 2

Another option to mitering the joint is the coped joint. In this joint what you do is run one piece of the quarter round right into the corner. On the second piece of quarter round, you miter it's end at 70 degrees (for the 140 degrees you mention). Then you take a coping saw and saw along the edge of the profile that the miter shows. You actually saw it so the saw cuts a little more from behind the quarter round than is required. When you are done, you simply press the coped edge against the one installed and cut to length.



It's easier to do than to describe, and easier to do than you would think. When you cut the miter, take a pencil and darken the outer edge of the quarter round (the side that would show if it was a miter joint) and that's where you cut. You cut out all the material in the miter itself which leaves you with the negative image which fits against the other piece of molding perfectly.

Answer 3

Cutting angles can be a real headache, unless you observe some basics. First of all, the surface that goes against the wall or cabinet must lay flat on the bed of the miter saw. To change direction of trim, simply divide the angle of direction change by 2. For 90 degree cuts, this is usually straightforward, since miter saws have a 45 degree stop. 45 degrees is 1/2 of 90 degrees. It's when you have an angle other than 90, 60, or 45 degrees that the cuts get challenging. Yet, you can get it right the first time. Here's how. Using a piece of paper (or cardboard or scrap plywood), transfer the direction of one leg of the trim onto the paper with the pencil. Without moving the paper, transfer the other leg of the trim run to the paper. You should now have some odd angle drawn on paper that you want to cut the trim to fit to. Using a ruler, measure the same distance up each leg of the angle on the paper and make marks at these points. Draw a line between these two points with your pencil. Measure the distance between the two points with a ruler. Divide this distance in half and make the mark on the line you just drew. Draw a line from the angle vertex to this halfway mark. What you have just done is bisected the angle you want the two pieces of trim to match. Take the paper to your miter saw and lay the paper down on the bed so that one leg lines up perfectly with the blade set at 90 degrees. Tape the paper onto the bed if necessary, to keep it from moving. Rotate the saw blade until it lines up perfectly with the bisection line on the paper. That's it. Lock down your blade to keep it from rotating and you have your angle. Cut the trim pieces using this angle and they will fit perfectly if you copied and bisected the angle correctly. It seems that high school trigonometry was useful after all, doesn't it?

Answer 4

Use a miter saw. That's what they are made to do.



You could rig a table saw to cut in a similar manner...but it would take some fairly exact measuring....

Answer 5

scott got it...



i would use a 70degree, and make it biggar, then sand it to fit .. add glue and nail