How to make Magic Water-Proof Sand - The Geek Pub
Dec 15, 2019· If you have more sand don't make thicker layers. Set it aside and make a second batch. The thinness of this layer is a key to correctly making magic sand. Step 5: Spray on the Scotchgard Protector. Spray on a fairly thick coating of the Schotchgard protector. The idea is you want it to penetrate all of the grains of sand.