A photo canvas is mounted on a wooden stretcher frame.

How to tighten canvas with wooden wedges. Since wood is a natural. ( this happens a lot on quora. How to tighten a canvas print tightening a canvas print the easy way.

These bits of wood are canvas tightening keys or wedges, used if the canvas begins to sag a little on the stretcher. A short video showing you how to insert those canvas keys / wedges. Canvas keys are optional and they don’t work if the corners of the stretcher bars are stapled or.

Always use the wedges to move one stretcher at a time, thus keeping. Canvas is made from cotton, and as you probably know from shrinking clothes in the dryer, cotton shrinks. These wedges are called “canvas keys” and they’re for tightening the canvas.

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This is a ready made canvas and i usually add the keys prior to painting, even if the can. Using a small hammer, knock the wedges upwards into the slots while supporting the canvas with your free hand.