In this post I wanted to share a tip that I had to use recently. If you store your equipment better than I do you may not need this tip!
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How to Repair a Badly Stored Stretched Canvas
I have a range of different sizes of stretched canvases. This is very handy as I can choose the size I want for a particular painting. Usually I store them so that all the same sizes are together and resting on an edge (normally leaning up against a wall). This way they support each other and everything is fine.
However as I was looking for a particular size I discovered that I had mixed a small stretched canvas in between two large ones. It must have been there for a while as the small one had put dents into the larger canvases. What a nuisance!
How to Fix Dents in a Stretched Canvas
I find that if you get a bulge or dent in the canvas surface you can remove it by thoroughly spraying the entire back of the stretched canvas with clean water.
The canvas will usually dry smooth. However you need to let it dry naturally for the best result.
Another Use for this Spraying on the Back Technique
Another use for this technique is to slow the drying time of a painting.
If you want to slow down the drying time of your paint you can spray the back of a stretched canvas with a water spray before you start the painting. This will slow down the drying time without affecting the paints on the front of the canvas.
I like to spray the rear of the canvas before setting out the rest of the painting equipment so it gets time to soak into the canvas a bit.
Obviously the amount of extra time you will get depends on some other factors too. For example how much water you sprayed on the back of the canvas, how wet the paints are that you are using, room temperature and humidity, and so on.
However it is a handy thing to know. Be sure to try it sometime to see how it works for you.