How to stretch a large canvas발음듣기
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How to stretch a large canvas
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This is a 40 by 40 set of stretcher bars, and you'll notice that at this format I've added some cross bars here.발음듣기
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The reason for that is to make sure that the stretcher stays in plane and when you apply pressure to it, it doesn't torque.발음듣기
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So the stretcher is 40 by 40, the canvas is 46 by 46, because it has to account for the depth of the stretcher bar, going over the side.발음듣기
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And then I want to be having a little bit of excess canvas here, on what will be the back of the stretcher where I'll be adding staples.발음듣기
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So unlike the small canvas where we stretch that work facedown, we're now going to be stretching work face up.발음듣기
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So the next thing that you want to do, just like when working with a small canvas, is to make sure that the canvas is centered over the support, over the stretcher here.발음듣기
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And it doesn't have to be perfect, but make sure that you have roughly the same amount of canvas hanging over all of your edges.발음듣기
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So the first thing that I'm going to do is to add a staple now, upward into the reverse of the stretcher bar.발음듣기
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[SOUND] And just as in the small format canvas, the rule of thumb here, is to always apply tension across the center of the painting.발음듣기
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Now if you're really strong, and in fact for this size canvas I really could do this with my hands, but certainly for a huge canvas, or if you don't have a lot of hand strength you can use a pair of stretcher bar pliers.발음듣기
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What's important to look at here is the profile which has this little flinch down at the bottom.발음듣기
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That's the end that's going to end up rotating down on the side of the stretcher bar to pull some additional canvas.발음듣기
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You're going to grab the canvas and then pull it down using this little flinch to roll over.발음듣기
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I've added that staple, not on the reverse, but on the end of the stretcher bar and I pulled this under tension before adding that staple.발음듣기
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So one thing you may be wondering is how far to space these staples and there's no golden rule for this.발음듣기
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If I put a staple way too far out here, I'm going to get what's called scalloping which are these rolling undulations of the canvas that are going to be down edge here.발음듣기
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This is nice because now my staples are going to be evenly spaced on the sides of the canvas where they might be visible to the viewer.발음듣기
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In other words, I haven't put in that last staple which is going to give me a little bit of space to fold over that canvas which is what I'll do now, we fold this around the wood with your thumb.발음듣기
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And again be sure not to staple over that 45 degree minor join there that would close your stretcher and turn it into a strainer.발음듣기
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So typically what artists will do is just put a couple staples in to make sure it's not going to fold back on itself when you hang in on the wall or add it into a frame or something like that.발음듣기
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Alternatively what you could do is stretch this again, put a staple in and then remove the staples from the edges which are no longer holding tension.발음듣기
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You would only do that if you wanted to have clean edges and you didn't want to look at all this staples on the edge.발음듣기
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The canvas is nice and tight, so when we are brushing on it, we are not going to push it down and hit that wood because we have some good tension here.발음듣기
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