Hi folks I have a question. Yesterday I went to my local weaving study group. Great folks. I learn a lot. I am having trouble with my selvages on an alpaca/silk shawl. I was asked about the warp pulling in towards the center where it is tied onto the cloth beam. Why yes it does. Are you weaving the full width of the loom? Why yes I am. It seems it is recommended not to weave the full width. I have never heard this before and wonder if this is standard practice. I recently sold a 40" loom and now have an18" and a 20" loom. How wide can I weave without selvage stress?