Stretch the canvas on a stretcher

Stretcher bribe with two properties. The created screens, even invisible and hidden, make a noble appearance and they are adjustable. Fabrications are hard to create right away with the perfect power. By time and external factors they weaken. Tensioning is possible on the stretcher.

Tension needs to be adjusted

A stretcher is a rectangular construction that can be proportionally "spread" in all directions. The prerequisite for a projection surface such as the screen for the projector and for color and motif application when painting the stretcher is wrinkle-free smoothness.

Several factors affect the tension of a canvas:

  • Elasticity of the linen cloth
  • temperatures
  • humidity
  • Older

Both with already strung stretcher and after the mating of a self-built copy, the stringing must be adapted to the external circumstances.

Anyone who builds a frame canvas himself must mount a movable miter at the corners before drawing it. By means of screws and pins, the miter slots can adjust the tension through the wedges.

To stretch a stretcher

  • Covered stretcher
  • Eight clamping wedges
  • cardboard
  • water
  • Little hammer
  • spray bottle

1. Preparation

Place the stretcher with the front side of the canvas on a smooth and clean surface. Make sure that parts of the frame do not protrude beyond the support surface.

2. Protect canvas

Place a protective cardboard on the back of the screen in each corner where you insert wedges. This will prevent the hammer from dragging across the screen and making marks.

3. First wedging

Successively insert a wedge into the lower corner groove in each corner. Proceed symmetrically. Insert the wedges so that the bevel runs counter to the miter profile of the stretcher. With the hammer, you drive the each wedge with light blows so far that the respective miter opens easily.

4. Second keying

Place the second keel crosswise at right angles to the existing one. Tap it with the hammer to the same depth.

5. Adjust tension

Lift the stretcher and check with light finger pressure, if the desired tension is reached. Tension the frame so that it "hangs" a little more elastic than it should in the final tension.

6. Generate final tension

Turn the stretcher over after evenly driving in the wedges. Lightly spray the canvas with water. During the subsequent drying it tightens slightly and achieves the perfect tightening.

Tips & Tricks

If your stretcher is warped, you can adjust the delay by removing and re-tensioning the frame. In order to maintain the function of the wedges, they must not be fixed with adhesive.

Product Image: AFPics / Shutterstock

Video Board: How To: Stretch a Canvas