For years I have been struggling with J-channel trying to make the outside corners look nice and pretty. On windows, I used to cut the bottom first flushing it with the sides of the windows, then the sides and finally the top to cap it all off. The joints usually looked terrible to me doing it that way, since I was either nailing into tapered flanges or uneven sheathing. So now I am mitering my corners which takes three times as long and I still have the uneven surfaces to deal with. Does anyone know of a way to mitre the corners and fasten the different pieces of J-Channel together so they behave more as a unit rather than four individual pieces that don’t want to line up?
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this might help... but it's really how i do my hang'n ceiling track corners
run top & bottom flush like ur do'n.... then your sides cut them with a 45 that will lay on top of top & btm flush cuts... you'll have to snip out the back a little so it will slide over... but it will look like a mitered cut from the front... good snips always help... on commerical stuff i make a ton of "trim" with my siding brake and gutter coil stock...
pony