Replies

1. 
   DougU | Nov 08, 2006 04:53am | #1

   I've done the cope on the 22 1/2° but it's not worth it, the miters will hold up fine if you cut them to fit exactly and glue them tight.

   Doug

1. 
   eap | Nov 08, 2006 05:57am | #2

   I have some trig. equations some place that will do what you want. I will see if I can find them.

1. 
   mojo | Nov 10, 2006 03:03pm | #6

   Here are some charts listing all angle and required bevel/miter angles.

   http://www.altereagle.com/Crown_molding.html

2. 
   maverick | Nov 10, 2006 04:26am | #3

   you could cope them if you like a challenge. I think you'll find it looks better mitered

1. 
   lange22250 | Nov 10, 2006 08:59am | #5

   Don't over think it! Take a couple of scrap pices and practice cutting it in position on the saw upside down and backwards. If it's a 45 deg angle use the 22.5 stop just like a normal pice of stock. As too coping the ends at the 90's, try cutting the crown 1/8th long and springing the stock into place, then tapping it together from the bottom with a block. I heard this advice and just thought it out for about an hour, made two bad cuts, and then had it down on my first job doing crown.

1. 
   maverick | Nov 11, 2006 05:26am | #7

   the point is its not worth the effort. a mitered 22.5 angle looks better than coped.

1. 
   woodnoob | Nov 11, 2006 08:46pm | #8

   Thanks for your input everyone.

   I messed around with coping it for a bit, then decided to just miter them.  I placed mounting blocks tight to both sides of the joint, then used the rasp on the backside to fit them nice and tight.  It didnt end up taking too long, and it looks great.

   The attempted coping was a bit of a pain for me.

   Thanks again everyone.

    

    

1. 
   notascrename | Nov 12, 2006 02:39am | #9

   The only people who resort to inside mitres can't cope. Jim

2. 
   DougU | Nov 12, 2006 04:04am | #10

   Jim

   I can cope as good as anyone but if your wasting your time coping a 45°wall(that was the original question) then you have to much time on your hands, and you dont have a better joint!

   Doug

3. 
   woodguy99 | Nov 12, 2006 07:50am | #11

   Ditto Doug.  Inside 45's, I guarantee you can't do a better, faster, or longer-lasting joint by coping than I can by mitering and pre-assembling with CA glue.

   Inside 90's are always coped, though,

4. 
   woodnoob | Nov 12, 2006 09:13am | #12

   Did you read the original post?

3. 
   wooddoug | Nov 10, 2006 08:55am | #4

   you can cope the 22.5's but it thins the wood out too much at the edge.miter  these pieces1/16" too long and flex them and pop them in