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Weaving On Opposites

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   Weaving on opposites is a relatively simple concept once understood.....for the sake of clarity I will use the standard twill tie-up on a four shaft loom to explain....

The standard tie up for twill on four shafts is as follows:

Treadle one tied to shafts 1 and 2
Treadle two tied to shafts 2 and 3
Treadle  3    tied to shafts 3 and 4
Treadle four tied to shafts 1 and 4

Normally, if weaving a straight twill one would treadle
1,2,3,4,1,2,3,4........

To weave on opposites, one inserts a pick in between each of the traditional picks...that pick weaving by raising the opposite shafts of the first
patterning pick....

Soooo....if treadle one raises shafts 1 and 2, that pick would be woven, then immediately after that pick one would depress treadle 3, which raises the opposite shafts, those being shafts 3 and 4, and weave that pick.

Next pattern pick in traditional sequence would be raising shafts 2 and 3 by using treadle #2.  That would be immediately followed by a pick using treadle #4 which raises the opposite shafts, those being shafts 1 and 4.

In the same fashion all the other picks would be woven and for a straight twill on opposites, one would treadle as follows:

1 then 3
2 then 4
3 then 1
4 then 2

If one wanted to reverse the sequence to create a point twill simply reverse the traditional twill sequence and add the opposing pick after each traditional pattern pick.....to weave a point twill on this set up one would treadle as follows:

1 then 3
2 then 4
3 then 1
4 then 2
3 then 1
2 then 4    and repeat over and over again.

Once you understand that on opposites simply requires the insertion of the pick on opposite shafts after every pattern pick you can weave any pattern on opposites.....

Su Butler
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  Su nailed it down perfectly. You can do many other weaves on opposites, Crackle, S & W, Overshot for instance and to outline the blocks better, you can use a weft of a different color for the opposite sheds. Fun !

See:

"Rug Weaving For Everyone" by Osma Gallinger Todd and
        Josephine Couch Del Dio,  no ISBN #.

"The Encyclopaedia Of Hand-weaving",  by S.A.Zielinski, 1959, -  no ISBN #

"The Weaving Book", by Helene Bress, ISBN  0-684-15664-4

Bill Koepp
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http://www.oocities.org/rugtalk
(Weaving on opposites is a relatively simple concept once understood.)