To prepare size as a glue:

• Mix 1 part of size with 1.5 parts of water whilst agitating. Leave to soak for 1 hour.
• Then dissolve by warming in a double bucket [water jacket] diluting further to a working consistency. Do not exceed 55'C.
• Apply to the timber with a glue brush.
• While still warm fold the canvas down and swab through with a warm damp cloth until a soap appears on the surface of the canvas.
• Ideally this is done with two people one gluing and the other swabbing. Keeps you lovely and warm, although you won't smell great.

Flints can supply galvanised buckets and hot plates for purchase.