Author Ben Uyeda | Last edit 9/12/2019 by Clementflipo
Hmm ep15 concretewoodcoffeetable final.jpg en en Creation 0
Use a circular saw to cut four balusters into 12” length pieces and another four balusters into 18” length pieces.
A few passes of sand paper are all that it takes to clean up the edges of the cut balusters.
The top should be 18” by 36” but use the balusters you cut and a right angle square to layout the top. Use scrap 2x4s or 2x2s as braces for screwing the melamine together.
Use latex or silicone caulk to seal the form. Once the caulking is dry, wipe the form to remove dust and dirt before pouring in the concrete.
It's easy to work with the white concrete mix and has no large pieces of aggregate. This mix is easier to work with but sets up faster so you'll need to work quickly. I used about 1 ½ bags and didn’t use any reinforcement. The top came out about 2” thick and is quite strong.
Make sure the wet concrete is pack down into every corner and vibrate the form with a hammer.
Let the concrete cure for at least 48 hours before removing the form. The manufacturer suggests covering the concrete to control moisture but I didn't and it came out just fine.
Unscrew the formwork and scrap off any of the caulk that is stuck to the concrete.
I used 1 screw in each side of each baluster. Even though each joint by itself isn't strong the resulting framework is quite sturdy. To keep the balusters from splitting drill pilot holes before screwing.
The concrete top is quite heavy and doesn’t slide but I put a couple screws up through the wood and into the concrete about 3/8” anyway.
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