What's the drying time for sand mixed with Elmers school glue?

by Lou

I have researched about how to set the sand so the shells don't sink down into the sand. I have a 3 year old grand daughter that will want to "hold and see".I found that I can mix Elmers school glue with the sand to set it up. The instructions say to bake it to set it up. My little jar is plastic so baking is out. How long will it take to air dry and will it dry clear or stay milky white?Here is what I want it to look like. I put the dry sand and shells in the jar to see what it would look like. I will add more sand to the depth of an inch.

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