Here’s a website that has supplies and instructions to recane your chairs……
http://www.chairseatweaving.com/seatimages.htm
Often you can find a local resource that teaches the art/craft of recaning….You learn while-you-do…… you work on your two chairs in the week or two class….Adult education ……Vocational/community college……”furniture refinishing-caning”……
“…measure once…..cut twice….throw that one away and cut a new one….”