Re: window casing/door casing
I have never done production trim work on a new construction site, always retro fit and always in a house that is full of stuff. I love the technique described and the work in the link, very nice! (what kind of wood is that in the office pics?)
For the retro/remodel work or homeowner who is upgrading trim or replacing windows/doors they might not be able to use the production process though. For one it is not often you find enough room to pre-assemble the frames on the floor in front of each window/door.
You are also faced with un-flat walls and openings that unlike new construction have twisted and settled and are rarely square. I live in the bay area, and the earthquakes have made pretty certain that no window or door opening is within 1/8 of square. This makes tweaking the reveal necessary sometimes.
Also, I have always found it easier to measure and mark long to long for double mitered pieces since I can hook my tape on the point of one miter instead of trying to "cut an inch" by myself on the short. Am I missing a good trick for this?
A good carpenter makes few mistakes, a great carpenter can fix his own.