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I am helping a buddy out with his trim on a remodel. This is a raised ranch so he has knee walls around the two perimeter walls. These are essentially going to be an L shaped shelf. The long side is 20' +/-, with a depth of 9 1/4" He got sold 5/4 thick stock with a bull nose similar to a tread. The short side is approximately 14' and a depth of 12 13/16" . Had I helped him reframe I would have set both knee walls at the same depth, but him and his friend followed the foundation. This is going to be a complicated miter, and might be beyond my skill level. Everything else up to this point has been no problem, and we are basically at this last part. What would be the easiest way to cut this miter or mark it for the cut. I was thinking the short side with greater depth would be square coming out of the corner and the miter would have to be started like 3" or so out from the corner, in order to meet the shallower depth miter? Any help would be appreciated, I want this to come out nice, he is not very picky cause he is painting and not staining, but I am picky. :confused:

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Make sure the deep side is cut @ 90 deg and push it into the corner. Take the shallow shelf and miter the end @ 45 deg. Take the 45 deg miter (shallow shelf) and slide it over the top of the 90 deg cut (deeper shelf) until the two bullnoses line up. Put a piece of 5/4 scrap under the opposite end of the shallow shelf to keep it level. Then just scribe a line down the 45 deg miter onto the deeper shelf's 90 deg end. You'll end up with a 45 deg miter that runs off the end of the deeper shelf leaving the rear portion of the 90 deg cut untouched with the part closer to the bullnose mitered to match the shallow boards miter. If this doesn't make sense to you let me know and I'll make a drawing and post a picture of it.

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IIRC, what you are thinking of doing is some sort of Jack Miter, you can try google.

 

Since it is being painted, I would run the wide stock full cut square, to the corner. Mark and measure the depth of the bullnose and cut that amount up to the line of the bullnose (finish the cut with a hand saw), Transfer the nose profile of the nosing to the "stub" and cope it to the nosing of the wide stock.

 

I think I got that right.

 

:v:

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IIRC, what you are thinking of doing is some sort of Jack Miter, you can try google.

Since it is being painted, I would run the wide stock full cut square, to the corner. Mark and measure the depth of the bullnose and cut that amount up to the line of the bullnose (finish the cut with a hand saw), Transfer the nose profile of the nosing to the "stub" and cope it to the nosing of the wide stock.

I think I got that right.

:v:

 

:shock: I really didn't want to cope the bull nose. I coped in all the speedbase, and my shoulder can't take any more coping, in therapy from surgery..

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lay one side over the other , use a straight edge to draw a line from the outside corner to the inside corner, cut the line on the top piece ,then transfer to the bottom piece and cut.

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