Cactus Planter!!! Perfect Purple Concrete Marbling

Mr. Concrete Concrete walks you through making a perfectly marbled concrete cactus planter using Grey Matter, the best mix for making concrete objects and sculptures. It's a tasty concrete sandwich that you mash into your mold and tickle out the bubbles with your fingers.

Please let me know in the comments if there's specific colours or objects you want to see me make for you!