Corner Piece #3 – Part 1

I have always wanted to build a corner piece with a concrete core. Here are the two that I have previously made.

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I had to be careful to provide a large enough footprint so that they would be stable. While I was building them I was thinking about concrete and the fact that the weight would help the stability of the piece. I now have the concrete skills to pull it off so I decided to jump in with a model.

There is no client involved so the model is a bit rough, almost like a 3D sketch.

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This piece centers around the concrete so that I where I will begin. The concrete elements in my work are cast. This means that I will have to think inside out. The form material is a special plywood that is waterproof and has a smooth coating. I refer to it as “Red Board”

Here is the finished form.

Note: this component is cast upside down.

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Now I will show the individual pieces that make it up. I need to stay one step ahead as the cast concrete can lock itself into a poorly designed form and require the destruction of the form to get it out. Yes I have made that mistake!

The back of the form

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The front of the form

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There is also a separate piece for the top (not pictured). All of the parts are caulked in place so that they will be water tight. I should mention that I use UHMW plastic to make the facets for the corners. I use the facts to relate the concrete to the rest of my work. Plus I can change them to give the casting a different look.

The concrete mix and the extra materials to give it a bit more strength go into the mixer.

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The form gets loaded and agitated to encourage the bubbles to work their way out.

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Three days later I free it from the form.

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It was a successful pour!

To be continued…

Corner Piece #3
Part 1
Part 2

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