About that frame [1] …
I gave it some thought, and the best and quickest way I can see making a frame is to somehow get all four pieces together into a single block that can be cut at once. If there was only some way of strapping the four pieces together …
[The Gang of Four in a “Group Pattern” …] [2]
Well yes, blue masking tape will work just fine to hold the pieces together while we cut the ends …
[Bzzzzzzzzzzzzzzzzzzzzzzz] [3]
Of course, it's still not quite that simple, because you have to make sure the blade is at a precise 45° angle, and that took a few tries to pin down, so to speak.
[A frame and a bunch of shims] [4]
Granted, the frame is now a few inches shorter than originally, but hey, not as misaligned as previously.
If only I had thought of doing that first …
[2] /boston/2008/06/14/gang.jpg
[3] /boston/2008/06/14/cut.jpg
![[2] /boston/2008/06/14/gang.jpg](/gemini.conman.org/boston/2008/06/14/gang.jpg){kind=link}
![[3] /boston/2008/06/14/cut.jpg](/gemini.conman.org/boston/2008/06/14/cut.jpg){kind=link}
![[4] /boston/2008/06/14/frame.jpg](/gemini.conman.org/boston/2008/06/14/frame.jpg){kind=link}