Selecting the right chalk art mediums for your project can be a difficult decision. Finding a quality product with the right surface is important. Because of the variety of chalk art mediums, it is important to determine if the substrate you are using is porous or nonporous.

Porous Versus Nonporous
Porous surfaces allow the passing through of water, liquid, or vapor. Pigment from the markers could get absorbed when using porous chalkboards. These types of surfaces include chalkboard painted surfaces, wood, paper, and cardboard.
Nonporous surfaces will not absorb water and liquids. Nonporous surfaces like chalkboard labels, mirrors, glass, glazed ceramic, slate, metals, laminates, and some plastics, will result in liquid chalk being easier to remove.
Therefore, always test your liquid chalk markers on a small portion of your medium to see if they are right for your project.
Cohas Chalk Art Mediums for DIY Projects at Home, Weddings and Businesses
The Cohas Standard Chalkboards are quality boards with a texture resembling antique chalkboards. These Eco boards have a nonporous barrier, so that the liquid chalk markers will remove easily and thoroughly. They come framed or unframed and in many different sizes. Therefore, they are perfect for use in homes and businesses at parties, weddings and events!
Leave unframed and prop on an easel or choose your own frame to mount the board in. In addition, we offer many other products that can be used for weddings, parties and home organization; all made right here in America!
Using Cohas Eco chalkboards, our artists were able to create farm market images of strawberries, apples, and pears with the waterproof 6mm markers. Our artists also used the Zig Illumigraph markers, which are highly fluorescent and suitable for lighted signs. These markers work with a black light and glow when light reflects or passes through them.
Creative Project Ideas and Unique Mediums

Our artists at Cohas.com are always trying to use the Cohas Color Collection for fun projects. The latest project involved drawing on clear plastic ornaments with the 1mm waterproof metallic gold and white markers. The flecks in the metallic paint sparkled in the lights of the tree and are nice and opaque.
Additionally, one of our artists used a metallic marker and painted on one side of a piece of acrylic glass. The result is a colorful shiny background that can be easily cleaned with Windex. Artists can also use spray paint to complete the same effect on the back, but that would create a more permanent background on your medium
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Finally, Cohas offers chalk artists a wide variety of chalk mediums to create chalk artwork on. This includes our chalkboard label collection, magnet collection, slate and novelty collection, and much more. For that reason, Cohas.com offers a large selection of wet erase menu board markers, and waterproof chalk markers. These markers work great for chalk artist. No doubt Cohas.com has what you are looking for.


Like any experiment, the mistakes and errors sometimes lead to different results. We found when engineering this new chalk marker tip we could fabricate it in any size. Our technician was able to modify the Zig Posterman 50mm tip into any shape too! Modeling after the Zig Memory System Scroll and Brush marker, our lab did create a tip with a wide and thin section.









Use any color on your pumpkin since they are very opaque, consequently you can not see through the marks that are made!
What if I forgot to shake the marker?
The Big and Broad has a wide tip with an edge that is about 1/4 inch wide. The wide tip was used to draw the text, “Honda Pilot” in one stroke. The edge of the white marker was used to create the keys. To make the year, about three strokes were used to create the one inch wide letters. The ink takes about a minute to dry, and can be drawn over, or next to without affecting the original marks.
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