Stone Master Molds Rubber Molds for Concrete, Mountain Ledge 1-Step Corner Mold

Stone Master Molds Mountain Ledge Corner Molds for Concrete

Stone Master Molds Mountain Ledge 1-step corner molds for concrete are designed to compliment the matching Mountain Ledge flat stone molds. Mountain Ledge is a dry stack, contemporary stone, hand-cut in lengths of 5″ to 12″ and widths of 1.5″ to 5″ for corners. These professional quality concrete masonry forms will create stone corners approximately 1-1.75" thick. Each mold makes approximately 1.75 linear feet with a grout joint.

A corner plug (sold separately) is required for one step corners (or you can create your own plug using plywood, etc.)  Fill the long end of the corner mold, vibrate sufficiently to remove air bubble, then place corner plug over the long end, and fill the short end and vibrate to settle the concrete, add more concrete to desired level then vibrate briefly to remove remaining air bubbles.

Our molds require NO release agent.  This will save you money, time, and clean up, as well as easy, clean release of face color pigments, unlike plastic molds, urethane molds, and silicone molds.

Available in 3 unique variations, with no stone repeats.  Additional variations available upon request.  Matching Mountain Ledge flat molds are also available.

Made in the USA, both materials and labor.

Manufactured Stone Basic Mixing Procedures Using A Pre-bagged Concrete Mix for your Mountain Ledge Corner Molds for Concrete:

This is one suggestion for mixing the concrete for the Mountain Ledge corner molds for concrete. There are many other instructions available online, including videos.

BE SURE TO USE A CONCRETE MIX THAT CONTAINS PORTLAND CEMENT. We recommend Sakrete Maximizer, as it has lightweight aggregate, is high strength, and yields more product, but there are many kinds you can use. Follow the manufacturer’s instructions for mixing.

If using pigment, add desired iron oxide pigment to mixer (100% pure, no additives). These can easily be found on Amazon, etc.

Additionally, a plasticizer can be added to reduce the amount of water in the mix. Pour into the molds which may already have coloring additives… NO RELEASE AGENT NECESSARY. Vibrate molds to release air bubble.

Finally, cure the concrete in the Mountain Ledge corner molds for concrete for approximately 24 hours at the minimum of 70 degrees Fahrenheit before demolding. Higher humidity is desired. Molds can be covered with a tarp to retain more heat and humidity. Continue to cure demolded stones at 70 degrees or greater until ready.