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

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


  • Professional grade rubber mold will last for hundreds of pours
  • A corner plug (sold separately) is required for one step corners
  • Each of 3 mold versions has one-of-a-kind stones
  • NO RELEASE AGENT necessary
  • Matching Cliffstone Flat molds are also available
  • Made in the USA
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Stone Master Molds Cliffstone Corner Molds for Concrete

Discover endless design possibilities with this modern and adaptable stack stone corner mold profile that elegantly enhances a range of contemporary styles through its unique textural elements.

Cliff Stone is a semi-jagged, rough-cut dry stack stone designed for a tight fit The finished product/corner stone is approximately 1-1.75" thick.

A corner plug can be used (sold separately) for 1-step corners, or you can create your own from melamine, plywood, etc. 1-step corners allow you to pour the corners in one step. Pour the long, horizontal end first, place the plug on the mold, then fill the open, short end and lightly vibrate.

Additionally, each stack stone corner mold makes approximately 1.5 linear feet if dry stacked and 1.75 linear feet with a grout joint.

These corner molds are designed to complement the matching Cliffstone flat molds.

What's more, our corner molds are available in 3 unique version, with no stone repeats.  Additional versions available upon request.

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.

Made in the USA, both materials and labor.

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

This is one suggestion for mixing the concrete for the stack stone corner molds in Cliffstone. 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 stack stone corner molds 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.


1 review for Stone Master Molds Rubber Molds for Concrete, Cliff Stone 1-Step Corner Mold

  1. RW

    Richard Walsh

    Professional grade material. Making lots of my own stone.Only wish there was more overall depth to the stone.

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