I’m returning to a previous discussion with this post since many have inquired about preparing a canvas surface and about what type of canvas to purchase or should one stretch their own. This post addresses these questions with tips and techniques: one oil/acrylic painter’s approach to preparing a canvas surface. This post is a continuation of Part 2 Media and Surface Selections.
Selecting A Pre-stretched Cotton Canvas
Thumbing through the 2010-2011 annual art supply catalogue from Dick Blick, I was struck by the myriad of canvas surface textures. Over the past two years or so, I have noticed an unwelcome increase in the thread thickness of pre-stretched canvas which requires more than the usual one extra coat of gesso to end up with a fairly smooth painting surface. All canvas labels from el cheapo in-house label at Michael’s to Winsor-Newton have coarse, rough, lightly primed surfaces which are fine for palette knife work but horrible for thin paint. Linen canvas labels such as Charvin or Raphael do not seem to suffer from this crappifying but anyone paying $20-$30 for an 8×10 canvas should receive good, nay extraordinary quality. I write for those artists such as I who do not create masterpieces at every session and need a good quality surface on which to work (and who are not independently wealthy). Thus Dick Blick offers many, many linen canvas choices (good marketing since a great surface guaranteesa great painting no matter the skill level of the painter, right?) but few cotton choices.
Tired of applying gesso 4 or 5 times and often still not getting a smooth enough surface, I began purchasing different single canvases which is when I discovered most cheap and middle priced cotton canvas labels have thick threads and little priming excepting one. Those oil/acrylic cotton, pre-stretched surfaces tried include most variations of Paramount, Practica, Frederix, Creative Mark, Dick Blick, Yes!, and Winsor-Newton. The Yes! Portrait canvas is thinner threads, is fairly smooth, requires one coat of gesso, if any, and is back stapled. This label is medium-priced and quite reasonably priced when purchased in quantities. I have now tried Yes! Portrait pre-stretched surfaces in 9×12, 11×14, 16×20, and 30×24 sizes and have been satisfied. Yes! Portrait canvas is currently available from Art Supply Warehouse . Here is a company selling what we used to get from anyone just a few short years ago, humph.
Preparing A Canvas
Stretching your own canvas or purchasing pre-stretched cotton canvas for oil or acrylic painting requires surface preparation. Because of high humidity and because I gesso a surface with several coats, this preparation can take several days. This discussion assumes you are using an acrylic gesso, not an oil gesso.
- Select your brush. The coarser the bristles, the more likely ridges will be left in the surface. I use a non-bristle artist brush from 1″-3″. Any shape will do such and I recommend flat or filbert.
- If preparing a pre-stretched canvas, lightly sand the surface. I use 320 grit sandpaper. The coarser the paper, the more likely you will have ridges. Dust off the sanding grit with a dry cloth.
- Inspect your gesso. Art supply houses do not rotate or date-mark their stock and, if having sat around for years, gesso will thicken. Acrylic gesso can be thinned with water. If you do so, make sure the resultant mixture is very well mixed and please start with small amounts of water!
- Brush on a thin coat of gesso. Let dry thoroughly. I gesso surfaces at night and continue preparation the next day.
- When thoroughly dry, sand lightly with 320 grit sandpaper. Feel the surface first which should be slightly rough. Sand a small area and touch again. There should be a noticeable difference. Sand the entire surface until it is of a uniform smoothness.
- Dust off the grit with a dry cloth.
- Repeat the previous two steps if desired. If you do gesso more than once, change directions each time to help ensure no ridges. If priming newly-stretched canvas, I recommend the above gesso/sanding procedure for a minimum of three layers.
Undercoating A Canvas Surface
Many undercoat before beginning their painting. Typically, undercoating means a merely covering the canvas in one color, usually a dark color. Undercoating has many advantages such as adding depth to a painting especially for those who paint in layers. Here is an example of an oil with a burnt umber undercoat. This painting was done in many thin layers to enhance the reflection on the table and to give depth to the fruit.
For the oil painter, undercoating in oil paint adds additional drying time for the undercoat must be thoroughly dry as to not mix in with the next layer. Using acrylics to undercoat shortens the drying time for the oil painter. Also, you do not need to undercoat every inch with the same color. 
Here’s an example of an acrylic undercoated surface (after gessoing) for a beach scene in oils. I did sand the acrylic undercoat after it dried but would not sand an oil undercoating.
Questions or comments? Please write!





Blog Spammers
July 7th, 2010Humph!
Well! It’s great that some are reading my posts and enjoying and hopefully, learning something about the creative process but, really, people spamming blogs? Because I have run up against cheats and do not wish to be an accessory to their schemes, I will now cast a wary eye upon each comment. Much of what I write below has been gleaned from Wikipedia to which I greatly thank.
According to Wikipedia most blog spamming is done to create artificial links to a site to increase the site’s rating on search engines. And it’s usually not “people” doing the spamming but programs written by people. As Wikipedia states: “Adding links that point to the spammer’s web site artificially increases the site’s search engine ranking. An increased ranking often results in the spammer’s … site being listed ahead of other sites for certain searches, increasing the number of potential visitors and paying customers.”
There appears to be several type of spamming of blogs:
The Wikipedia article goes on to say “If an actual comment is given it is often just “cool page”, “nice website”, or keywords of the spammed link.” so……
To those of you who are blog spammers in any sense of the phrase, watch out! Since I moderate my comments, those comments which fit the criteria of “great site” or “thanks for the article” without any specifics, you are history.
For those artists or art lovers who do comment, I apologize. – Diane
Roughly three weeks ago I wrote this post and since then I probably have received all possible varieties of “comments” from spammers, from “thanks for the information for my college paper” to “Good post! your opinion counts!” to “I’ll certainly pass this along to my sister/friends/etc” to the obvious spammer who writes ”please see my informative video at….”. And there are those non-native English writers who just manage to have a slight grammatical error……which I delete immediately.
Since so many are funny and all are unethical, I think I’ll start collecting them….. Diane
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