Firepit Concrete 4-Foot Diameter Molds - Boulder Random Rock  - Expressions-LTD
Firepit Concrete 4-Foot Diameter Molds - Boulder Random Rock  - Expressions-LTD
Firepit Concrete 4-Foot Diameter Molds - Boulder Random Rock  - Expressions-LTD
Firepit Concrete 4-Foot Diameter Molds - Boulder Random Rock  - Expressions-LTD
Firepit Concrete 4-Foot Diameter Molds - Boulder Random Rock  - Expressions-LTD

Firepit Concrete 4-Foot Diameter Molds - Boulder Random Rock

Sale price$199.09
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Ships from Illinois
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Shipping: This Product can take 2 to 4 weeks to ship out.
Ships via FedEx/UPS only

Firepit Concrete Liner Stamp -  4' Boulder Random Rock

  • This Boulder Firepit Mold is designed for 2 of these liners to fit perfect inside a 4' Sonotube.  We also have this Boulder style in a shorter form (sold here) liner that 2 of them will fill a 3' Sonotube! 
  • PLEASE NOTE- For reference, the pictures shown here are of the smaller 3' Firepit forms.  If using these 4' forms, your firepit will be larger scale-  If you buy these forms and want to send us some finished pictures, that would be great!
  • 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 75" 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 (again, 2 of these needed to make a 36" circle!)

How to Use Firepit Concrete Liner Stamp - Boulder Random Rock

  • Create the top coping cap / ledge in a number of ways:
    • We have a specially made Rubber Edge Liner Form (sold here) just for this purpose!  It can be used in a form, but was designed to be screwed right to your firepit outer form (Sonotube, wood circle, etc.).  Some consideration should be taken to assure your securing it is adequate- a few screws probably won't hold it securely once filled with concrete, so use a bunch or back it with some 2x4 braces if you aren't sure!
    • If you can pour the firepit base ring first, then you can come back and set up a Bendable Plastic Countertop Form (sold here) and one of the Rock Liners to go in it, and then pour the cap. 
    • Another common way is shown in the picture below above shows an example where parts of the 36" Sonotube were cut and spread lightly larger than the 36" diameter and secured in place, and a 2" or 3" Edge Form Liner can then be used to create the cap.  This method lets you pour the whole firepit and cap all at once as a solid piece.

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