Glossary - O

Overcasting
A technique of wrapping rug edges with yarn which is not a part of the piled field. The few warp cords which make up the edges, are treated separately than the rest of the rug.

Overlock
An Overlock-Sewing Machine sews and hems seams and cuts off the leftover cloth. They have no bobbins, using instead 3 or 4 thread cones. Some overlock machines can be set up to do a rolled or blind hem, but all can bind off the edge with an overcast stitch.