Subtitled "Or possibly More Than You Care to Know About Weaving Overshot". I claim to be no expert, but for anyone interested, bear with me through this post, and you'll know about as much as I do now (which is just the tip of the iceberg).
Overshot is comprised of two different thread weights. One is lightweight, is used for the warp (the threads that you start with on the loom), plus half of the weft (the threads you pass back and forth through the warp on the loom) and forms the structure that holds the cloth together. The structure is comprised of what you'd probably think of as the simplest of weaving structures - one thread up, one thread down, repeat to end. The second thread used for this type of weave is heavier, proportionately, to the ground thread, and it is what forms the pattern. Because you have a nice, solid, interlocked weave structure, you can use this heavier thread to do long floats (think carrying a color across the back of a Fair Isle knit and you've got the main concept here).
To produce this, you alternate the 2 threads back and forth across the warp threads. So - for weft pass #1, I would use my lightweight yarn and do a simple one thread up, one thread down that looks like this:
On the next pass, I would use the heavier thread and only lift certain strings in the warp up, so the heavier thread floats across some, and goes under some, according to the pattern. Like so:
Alternating the lightweight (always in the one up/one down threading pattern) and the heavier-weight threads (according to the floats indicated by the weaving draft), you eventually wind up with a structure where the two are interlocked, which looks something like:
See how the white threads are encapsulating and sort of "hugging" the thicker blue threads into place? That's the basis of overshot.
This pattern is reversed on the opposite side, where what are the little squares of blue wool on the right-side picture, above, now are seen as the longer floats on the "wrong"-side.
I'm making a lot of progress on this. I have 65 inches total to weave, and I'm just under the 30-inch mark.
For those of you keeping score (and who have slogged this far in this post), I found the AWOL bobbins this weekend. Diggs and I had a chat about them while he was having dinner the other night, and he suggested I look in the least likely place I would think to put them. I found them lying in plain view (albeit still in the plastic bag from the Three Wishes shop) on top of the small end table in the guest bedroom. I have no recollection of them having been put there, but whatever - they were lost and now are found.
All for now.....