If nailed flat across the boot-side, with the top edge rounded down, or overhung to form a bead in the neck, the panel should be bent and canvassed before, fixing. This must be done very carefully, or the panel will split. To canvass a panel after it is bent, place it on a wide board, round side up, and drive in a draw-bore pin at each outside corner; this will prevent the panel ging in the centre, which would split it. If the panels are boxed in flush, canvass them after they are pinned in. Quarters and back panels should be canvassed a day or two before they are wanted; there is then less danger of breaking them when fitting them in the grooves. This only applies to panels with a slight single sweep; where there is a return or chair-back sweep they must be canvassed after they are in.