I can't seem to get this configuration to work for a 4s pattern. I have 2 rigid heddles and 2 stick shuttles and am unable to get the 4th shed open (4-1 shed on the 4s pattern). I am trying to do a 4s point twill and I can't get it to work.
Here is what I worked out:
The fourth shed is impossible to get open, it's too hard to separate the threads from the 3rd and 4th shed.
Must I use a third rh to mimic 4s?