Unweaving, method 1

It is quick and easy to take out a portion of a loose weave. Make a separation in the warp threads near the selvedge in order to cut the wefts without accidentally cutting a warp thread too. Remove the short weft loops at the selvedge by strumming the edge warp threads out to the side with thumb and forefinger. Pull the wefts out from the middle of the weave one at a time.  Loosening the warp tension just a little may help the wefts pull out more easily.