Here is a quick photo-by-photo post about making 14″ and 16″ Atlas stones using the Slater Hardware stone molds. Slater Hardware does a great job including written instructions with the molds and on their website. There are also several YouTube videos on the process but we couldn’t find any step by step photo tutorials so we decided to put this together. We also did a keg the same day and will be making a post on that at a later date.
(Updated 8/4/2017: YouTube Video added)
Equipment we used:
- 16″ tires for the 16″ mold to rest on.
- 5 gallon bucket for the 14″ mold to rest on.
- 14″ and 16″ Slater stone molds
- Pro Finish 5000 bags of concrete
- Old towels
- Concrete mixing bag
- Gorilla tape
- Silicone spray
- Painter’s measuring pail
- Plastic wrap
- Rubber mallet
A more in detail photo of the items used also including the Pro Finish 5000 concrete mix. Be sure to buy the correct amount of concrete for what the finished stone is expected to weigh.
Spraying the inside of the molds with silicone spray to prevent the cement from sticking to the mold.
We lined up the pre-marked lines on the mold and insured the two pieces of the mold were as flush together as possible before beginning to tape them together. This is very important to avoid a large seam.
Continuing to tape the outside of the molds. The more tape you use, the better it will stay together and the molds will stay cleaner when it comes time to take them apart!
Final round of tape around the circumference of the molds.
After we finished taping, we wrapped the outside of the molds with plastic wrap. This is an extra step to help keep the cement off the molds and make clean up easier.
More plastic wrap…
All ready to go!
Slater Hardware recommended 1 gallon of water per 80 lb bag of cement. We used a paint measuring pail from Lowes.
Ready to be mixed in the concrete mixing bag (also from Slater Hardware). The instructions are very simple to follow: cut open the top of the cement bag, put the mixing bag over top of the cement, flip the cement bag over and empty it into the mixing bag, add the water, close the top with the provided tie, and roll it around agitating the contents.
We were pleasantly surprised with how well the mixing bag worked. We don’t have space for a wheelbarrow and the mixing bag was quick, effective, and takes up virtually no room when not being used.
Beginning to fill the molds!
Agitating the cement by shaking the tires. We also used the rubber mallet to tap on the outside of the molds to bring air bubbles to the surface.
Wait about a week before taking the stone out of the mold. We started by taking the plastic wrap off (seriously, it helps so much with clean up!)
Once the plastic wrap was off, we began pulling the tape off.
Slater Hardware provided a block of wood with a notch cut in it to help separate the two halves of the mold.
The top of the mold coming off.
The top of the 14″ stone revealed! We were very surprised with how well it turned out especially being our first attempt.
We rolled the stone off the bucked onto an old, squishy exercise mat to protect
Taking off the bottom half of the mold.
The bottom half also looked great!
We used a diamond concrete cutting wheel to grind off the extra cement on top.
The seams turned out really good so we just did a quick sanding to smooth out any rough edges.
The finished products!! These did not have any large air bubbles or flaws so we chose to leave them as is and not use Portland Cement to finish them. We were very impressed with how well they turned out, especially since this was our first attempt, and also how straight forward they were to make.