How to Install Corner Supports on a Prestretched Canvas

Written by ryan heiser
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How to Install Corner Supports on a Prestretched Canvas
Corner supports will increase the structural integrity of poorly constructed stretcher frames. (Comstock/Comstock/Getty Images)

Some prestretched art canvasses have insufficient support structures for their wooden frames. Stretched canvas applies a constant amount of stress that may cause frames with inadequate structural integrity to warp or fracture. Luckily, weak canvas reinforcement is a quick fix for DIY-minded artists. With a few cheap materials from the local hardware store and a bit of lumber, you can get back to work on your masterpiece in no time.

Skill level:
Moderately Easy

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Things you need

  • Brad nails
  • Hammer
  • Wood
  • Saw
  • Ruler
  • Pencil

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  1. 1

    Place the stretched canvas face down on a flat surface so that the wooden support structure is visible. Measure the thickness of the wood used to construct the canvas frame.

  2. 2

    Purchase a 1-foot by 6-inch (or larger) piece of wood that is of equal or lesser thickness to the canvas frame.

  3. 3

    Cut the wood down the centre to create two equal 6-by 6-inch squares.

  4. 4

    Draw a straight line along each wooden square from one corner to the opposite corner. Cut along the lines to create four triangles, each with one 90-degree angle and two 45-degree angles.

  5. 5

    Fit the 90-degree corner of each support into the 90-degree corners created by the frame. Secure the supports to each corner with brad nails (panel pin nails).

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