Originally Posted by BIGmouthinDC
I'm amazed at the skill involved in getting the two pieces to mate properly, If you are off on your spacing of the first part by 1/32 of an inch by the time you get to the twelfth row your are pretty much screwed.
its just a bit of carpentry magic. obviously they have to screw the face frame together in the room...sooo...my guess is they mount the first octagon and get it perfect, then you can mount all of the other ones using the *actual* face frame piece that will be between each one as the spacer as you go. if you do that in each direction, then it has no choice but to be a perfect fit once you screw the face together and lift up. (even if you are off by 1/32" on the first one, you are using the face frames themselves, so by the time you are done, the entire ceiling is out of square to the room by 1/32", but the ceiling itself is perfect, just skewed...and not likely noticeable).
BTW: still amazing.