| Word | Description |
| Raw edge | an unfinished fabric edge |
| Reducing lens | a device that allows you to see a quilt as if it were several feet away. |
| Redwork | white or off-white fabric with images embroidered in red thread. Frequently redwork or bluework blocks are surrounded by solid fabric of the same color. |
| Reverse appliqué | an appliqué method where the foundation fabric is on top of the shape. The foundation piece is cut away to reveal the appliqué shape. |
| Rotary cutter | a special cutter with a sharp, round blade which is very handy for cutting fabric. You can cut through several layers of fabric with a sharp rotary cutter. You should use a rotary cutter with a self-healing mat and an acrylic ruler for safety – both of you and your table or cutting surface. |