OK, in house project. Finally got around to trimming a window. Chose the hardest one, bathroom window. Took a lot of time, and a couple of remade pieces, the non rectangular ones of course. Bummer when the router skips.
The carpenter had put 3/4 OSB around the inside of the shower so grab bars could be put anywhere (not that I've installed any) and decided to run it all the way across the west wall. In hindsight I wish he had stopped at the edge of the shower, a slight return there would have made my finishing life much easier. The exterior walls are SIPs with 6" insulation and drywall on the inside. Thus both the door and window are recessed by not only the 3/4" OSB he added but also the drywall on top of it.
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You might note that there wasn't a great attention to detail getting the cutout in the OSB or the drywall to fit tight to the window or door frame so first I had to clean up the foam insulation and cut the OSB and drywall so there would be a flush surface.
Then I padded out the gaps with appropriate sized pieces of pine. Of course the depth from drywall to the window isn't any more uniform than the side and top gaps.
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Since the family decided on natural vs painted wood, all trim will be red birch. Thus I had to stain the window frame. Fruitwood on pine seems to be a decent match for red birch, haven't found any stain called "red birch". Sill and interior trim installed. The left side trim is wider at the top than it is at the bottom to match the wall.
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Sides, top and apron installed
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The trim was installed with my battery operated DeWalt 18 gauge brad nailer that I got for Christmas last year. WAY easier than pre-drilling hardwood and fastening it with finish nails as I did in the prior house 25 years ago!
The door will be "interesting" since the strike is inset a fair bit from the wall face. I'll need some sort of metal plate with a curve on it so the latch doesn't bash then drag along the wood padding trim. And, of course, the hinges extend partly across the door frame on the other side. And you may have noticed that there isn't much space for trim between the door and the beam above it.