Angle for Crown Moulding when corner is not 90 degrees
johndrew
| Posted in Construction Techniques on
I have two corners which are about 1/8 and the other 1/4 off when measured with a square at the 24 inch side.
Both are less than 90 degrees.
My question is..What is the approximate angle should I cut on the miter box for a better fit?
or can you tell me how much the angle would be off in 24″ with a miter of:
44.5
44
43.5
43
Then I can measure the out of square distance and adjust to the approximate angle.
Replies
Off = 24 * (1-ARCTAN (angle cut))
Yeah, for small angles you don't really need a trig table/calculator -- an inch at 24" = so many degrees, to reasonable accuracy. But I've had a long day, and figuring out "so many" would make my head hurt.
Missing something
I Googled Archtan and got a calculator. Pluged in 44 degrees and got 88.698.
Off= 24*(1-88.698) = -2,104.75 ???
Never was good in Trig..got lost after the teacher said bring two sharp pencils to class.
They trusted you with sharp pencils?
Dropped Trig
That's the reason I dropped Trig. All I had was two sharp crayola's.
Dropped Trig
That's the reason I dropped Trig. All I had was two sharp crayola's.
Inside corners- Cut test patterns
They are all inside corners. I tried to cope one but did not come out very well and did not have a good rasp to fine tune it. Looked at Amazon but still did not find a good rasp set.
I did build an open square box which would hold the trim at the ceiling/wall angle so I could see the backside after I did the cope to see what needed to be taken off to improve the cut. Looked like it needed a lot of caulk.
I will take your suggestion and cut test patterns. Hopefully I will find a good video on coping and rasps.
Any suggestions?
I bet Youtube has some good tutorials. Gary Katz probably has videos on this but I know he uses the Collins' coping foo with a barrel grip jigsaw. I still like a nice coping saw and a coarse sanding sponge for the fine tuning.
Coping Blade and Sanding grit
What coping blade fine or course? and grit of spoung? Gosh Gary Katz makes it look easy