Firepit Concrete 3-Foot Diameter Molds - Boulder Random Rock

Firepit Concrete Liner Stamp -  3' Boulder Random Rock Liners sold individually (14" x 57" approx) This Boulder Firepit Mold is designed for 2 of these liners to fit perfect inside a 3' Sonotube.  We also have this Boulder style in a longer form (sold here) liner that 2 of them will fill a 4' Sonotube!  Stacked Stone rubber form liner for making concrete firepits and seatwalls. Aggressively textured boulder style stones. Super simple to use to make a concrete firepit:  Just get a 3-foot Sonotube (from your local construction supply store), and get TWO of these liners and they will fit inside it.  To create the inner ring of the firepit, you can use something as simple as a garbage can filled with water (so it doesn't move!) Size Dimensions of Firepit Concrete Liner Stamp - Boulder Random Rock  Size: Each liner is around 14" tall, and 57" long. Liners have 1" or more of relief (sticking out) Ends of the liners are staggered so they meet up with each other when using in a circle (agai