BOHLE Hardwood Wooden Wedges x 50 Pieces BO 5162002

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If it’s a good painting it may be worth the effort, and it could be a learning experience to practice re-stretching.

In accordance with your privacy policy, please send me information on the following product range by e-mail on a regular basis and revocable at any time on the entire product range of www. But I find that on all canvases but especially on large canvases, I get a better tension if I hammer on the centre of the bar with a block of wood against the bar and then tap the wedges in.Did you use a mount/matte or a slip to give space between the painting and the glass or is the painting up against the glass? Centre bars also have a little gap and when you purchase a centre bar to stretch your own canvas you should receive some slim wedges to tighten up the centre bar.

This is what is meant when someone says you need to ‘bang your stretchers apart’, they mean to tap the stretcher bars in their centres, one at a time, away from the middle of the canvas.If I do that on the centre of all four bars (I often tap upwards so the weight of the canvas gives something to push against) I usually get an even tightening, then when I tap the wedges in I do it quite lightly, just until they stick. It’s used with the mitre gauge and consists of a board with a hinged stop block, a desirable feature for making identical wedges. After you have expanded the canvas a bit then push your wedges in to hold them apart, like a doorstop wedge holds open a door, or a keystone hold a masonry arch in place. Apparently the reason the canvases are stapled in this way is because the stretchers are put together first before the canvas is stretched and it prevents the rectangle from moving and becoming a rhombus before the material is attached.