Maggie is preparing canvas for strip lining. When canvas ages, gets damaged, and/or becomes brittle, it may require a support of new canvas. This type of damage and aging usually occurs on the sides of the painting (the tacking margins) where the canvas is nailed or stapled to the frame. Strips of new canvas must be measured and cut to cover the previous damage. The strips are prepared with a thermoplastic polymer adhesive. Maggie experimented with Lascaux, Plextol, and Mowilith and decided on Plextol. After the strips are prepared, they are applied to the backside of the original canvas with an iron.