A seam ripper is a small
tool used for unpicking
The most common form consists of a handle,
shaft and head. The head is usually forked
with one side of the fork flattening out
and becoming a blade and the other side
forming a small point. In some designs the
blade side then tapers back to a point to
allow easier insertion in tight stitching.
In use the blade is inserted into the
to be cut. The thread is allowed to slip
down into the fork and the tool is then
lifted upwards allowing the blade to cut
through the thread. Once the seam has been
undone in this way the loose ends can be
removed and the seam resewn.