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"Marble" Texturing
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In a shallow pan, add acrylic paint to water. The paint will float on top.
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Swirl it to form patterns, adding more colors if desired.
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Drop a greeting card flat onto the water. When you lift the paper out of the pan, the paint will have adhered to it.
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Lay flat to dry.
ACRYLIC PAINT MARBLING
Although flour is the traditional thickening agent in most cooking, cornstarch, maizena! also known as cornflour, is a fine, powdery flour ground from the endosperm, or white heart, of the corn kernel. People often wonder what the difference is between cornstarch and flour. Both are starches, but cornstarch is pure starch, while flour contains gluten. The gluten reduces the thickening power of flour, so lacking gluten, cornstarch has twice the thickening power of flour. Sauces thickened with cornstarch will be clear, rather than opaque, as with flour-based sauces, and it doesn't cause lumps like flour.
Alum is aluin
STAP 1
The first step will be to apply alum solution to all of our papers and the notebook. Put a pencil mark on one side of each of the recycled papers and archival papers. This will help you remember what side you applied the alum to once it's dried.
To make the alum solution measure 2 teaspoons of alum (the white granular powder in the bag labeled A) into a cup. Be careful when working with alum. Try to avoid getting it on your skin and clothes and don't go inhaling it for fun.
Add 3/4 cup of water to the alum and stir until dissolved. Wet your foam brush and get ready to apply the alum to the paper we marked.
Lay out kraft paper or newspapers on a table to protect your surface. With the papers laying marked side down brush on alum covering one whole side, don't miss any spots! Repeat this on all the paper included in the kit.
Cover the front and back of the kraft notebook with alum. Set aside to dry. Once it's dry put the notebook under a heavy book to flatten out before marbling.
Lay out all of the pages and the notebook to dry overnight or at least 6 hours. They should be completely dry before using. Once dry we also recommend pressing them under some heavy books. The flatter the paper the easier it will be to put it into the marbling paint. Don't move onto the other steps until this is complete.
STAP 2
The next phase is to create liquid cornstarch.
(Of behangplak) It's super simple to make your own starch but you can also buy liquid cornstarch at the store if you would like. Both will work for this tutorial. Grab a cup and measure 2 tablespoons of cornstarch (the bag labeled C) into the cup. Add approx 1/4 cup of COLD water and stir until all the clumps have dissolved.
Pour the cornstarch into the boiling water and boil on high for one minute, stirring vigorously. Turn off the heat but keep the pot on the hot surface for an additional 3 minutes while stirring occasionally. Making sure to prevent any coagulated bumps from forming.
Pour the liquid cornstarch into one of the baking dishes you set aside. We used a 13" x 9" ceramic dish. If you use something larger you might need to make more cornstarch to fully cover the bottom.
If there are any clumps in the starch try to keep them from falling in the dish. Discard them in the trash. You want your cornstarch as silky as possible to create a smooth marble. Allow the cornstarch to cool to room temperature befor e moving onto the rest of the steps.
Pour water into the other empty baking dish. You want enough water to go up a few inches on the side. This dish will be used to rinse off your paper once the paint is applied.
STAP 3
Now onto the fun part... Grab four cups and scoop out a little paint into each one (reserve one for the next step where we will combine all the colors to make deep plum). Add a little water to the paint, go slowly. You want the paint to have the consistency of milk. If it's too thin it won't saturate the paper. If it's too thick the paint will sink to the bottom of the dish. We'll experiment with this in a minute.
Our favorite color combo this month came from mixing all three of the colors into a deep plum. The mixture uses more fluro violet than red and blue. Mix the red and blue into the violet until you achieve just the right shade of plum. Add water and stir just as we did with the other colors, trying to keep the consistency like milk.
You'll have four colors to play with while marbling (or more if you mix them other ways). The paint will sink to the bottom of the water as time goes by so make sure to give them all a stir before you begin marbling and in between marbling sessions.
Set the paints beside your liquid cornstarch dish and grab the plastic dropper. Use the dropper to grab some paint from the top of the cup. Gently graze it across the starch dropping little drops as you go. If your paint is simply falling to the bottom without dispersing along the top it probably means your cornstarch mixture is too thin and you should boil it down a bit more to thicken it up. Ideally you want the cornstarch to be thicker than the paint. You can also try watering your paint down a little bit more to see if that helps.
When you are done with one color squirt the paint back into the cup and then rinse out the dropper by sucking up some tap water and squirting it back out before moving onto another paint color.Keep layering colors until you've covered most of the surface. Make sure to keep stirring the paint in your cups as you go.
Dip another sheet of paper, alum side down.
You can also marble your own paper. Experiment with different types; copy paper, sketch paper, watercolor paper. You'll get different effects with each different kind. Just make sure to apply the alum solution to any paper you'd like to marble.
https://www.forthemakers.com/tutorials/acrylic-paint-marbling