Quote Originally Posted by Barb T. View Post
*snip*

As a weaver, you can easily lay out a twill as a right twill or a left twill. Just depends on how you thread the heddles. And, if I'm remembering right, the same threading will give the opposite twill on a rising shed loom as on a sinking shed loom. And you can choose to weave with the top side of the fabric up or down (although many hand weavers weave with the top side up so that any mistakes are immediately obvious). *snip*
For a straight twill (like our tartans), you set up the heddles as 1,2,3.4. How you lift them will determine if the "line" runs right or left. You lift two treadles at a time. If you do 1/3, then 2/4 you get plain weave. 1/2, 2/3, 3/4, 4/1 should create a twill that moves from the weaver's lower left to upper right on a rising shed loom. You can do zigzags and birdseyes, too.

Anybody want a picture essay on this? I'd be glad to warp up a gamp (sample) and do a little tutorial.