The supplies to make canvas stretchers are similar to the tools needed for a wood frame.
Although pre-stretched canvas is available at nearly all art supply stores, many people who use canvas frequently save money by stretching their own canvas. A canvas stretcher is similar to a wooden frame. It holds canvas in place, causing it to stretch. The supplies required to build a canvas stretcher are nearly identical to those required for a simple, unadorned, wood frame.
Wood and Saw
To make stretcher bars, the first thing on the list is wood. Canvas stretchers generally come in sizes ranging from 8 inches to 60 inches, so how much wood is needed for a particular stretcher varies. Softer woods, such as pine, are generally recommended for stretchers. A miter saw will also be required to cut the wood at the appropriate angles so it fits together properly.
Adhesives
Construction or wood glue and a staple gun, are required to hold the wood together and reinforce the bond. Construction grade wood glue is usually recommended to ensure the bars do not pull apart.
Optional Tools
Although not absolutely required, a small hammer and canvas pliers are recommended. The hammer, such as an artist's hammer, is used to join the stretched bars together. The canvas pliers are used to grip the canvas while it is being stretched and attached to the bars.
