This is nr #5 in the Water-Art tutorials and still just the start of really cool posts to come. Running watercolor up and down a paper and see how shapes take form is really trilling. I am on my way to learn to to manipulate and control the color the way I want, but there is a lot left to be explored! This post is similar to what Hive account@jungwatercolor posted about in a previous post- techniques on how to stretch watercolor paper. But I thought there was some more things to say.
There is an really interesting and important choice to be made when it comes to watercolor paper and how to stretch it or not stretch it. In my previous post I showed many ways to attach a paper to a board. All of them with their own pros and cons. The artistic choice is about if you want to control or be controlled, if you like accidents or hate them. Because the fibers in any paper will expand when wet, painting with lots of water will cause thin paper to bend. I like that sometimes and hate it more often - it is really irritating when you are trying to create even transitions or consistent color over large areas of the paper. Some would say - do not do that - It is the point of watercolor to make varied fields of color - yet I think it is nice to create certain effects - when I want them to happens - the craftsmanship.
How To Skip Bending Paper
First wet your paper for 5-15 minutes - the thicker the longer time it takes to expand the fibers to its maximum. It is ready when it feels sloppy :)
You can wet several papers at the same time this way. Use something to place the paper under the surface.
Prepare the watercolor gum tape. It is activated when you place water on the glue.
Place the paper on a board. The thicker and larger the paper - the more force when it shrinks. Only hold the tips of the paper - otherwise your fatty fingers will leave marks later on in the painting process.
Activate the gum tape - I use a simple method of running the tape in a tiny bit of water in a small plate. You can also use a wet sponge of spray bottle. But do not work the glue away.
And here comes the super tricky part
There is (of course) a relationship that decides if the glue will hold. What I know the following variables are involved:
The thickness (how many g/m2) and how large the paper is.
How many centimeters of the paper you out on tape (above 1,5 cm)
If the tape works on the board and paper
How wet the paper is when you apply the gum tape (some say the paper should just about to loose the shiny surface to be ready).
How fast the paper is drying (slower in colder temperature and higher humidity)
An even drying of the paper makes it more stable - therefore dry it horizontally and wet it evenly.
All of the above makes a complex formula that will make it hard to explain how you should do this work. You have to experiment to some degree to see how your board, paper and gum tape work. But I have given some guide lines here:
1.5 cm overlap is sometimes not enough for a 300g/m2 in a4 size (20x30cm) stretch with only gum tape - thinner paper is preferred when stretching or bigger overlap. A thinner paper is also cheaper - 300g/m2 is suitable to use with the staple. masking tape or in the block techniques explained in my previous post.
But if you want to stretch a thicker paper like a a3 (30x40cm) paper in 300g/m2 thickness there is a great way to skip the random results with only gum tape. Use the staple gun on top! The more tight and evenly spaced the better results.
But why not just skip the tape then? I find it important to be able to let excess paint and water to be able to rut out of the paper freely - without the tape it can be stuck water underneath the paper and cause unpleasant surprises.
This is what in looks like if you have to start over again - and you can actually retry - just peal of the tape and wet the paper again - although the paper quality is reduced for every try.
This is what you are looking for - now the most marvelous this can happen - the painting can literately paint it self and you can be in charge at the same time!
Hope you enjoyed! My next one will be about some of my other tools I use. Cheers!
posted about in a previous post- techniques on how to stretch watercolor paper. But I thought there was some more things to say.
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