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Step 5Add supports and embedded objects
Now is the time to add both the wire mesh support (I used K-lath) and any decorative crushed glass or embedded objects you wish to be exposed in the surface of the desk later! Also place any holes you want in the desktop later. wrap a piece of PVC pipe with some thin foam, then cover with packing tape to make a hole form. The pipe will tap free of the foam, then you can peel the foam/tape away. Use wire to suspend the mesh 1" above the surface of the form. this will place it exactly in the middle of the concrete. I wanted some crushed glass, so i bought some green, brown and clear glass, as well as uranium glass blobs. recycled bottles could be a good idea, any other rocks or other coins or other interesting objects can also work well! the possibilities are endless. I also bought some fiber optic cables to embed into the desk. I drilled some small holes through the melamine, inserted a fiber, then hot glued it on the other side. wire down the fibers and cables before pouring. bring the bundle of fibers together at the other end to go into a light box later. when unmolded and polished they will look like stars in the surface of the desk. Use spray adhesive to hold the glass in place in the mold so they dont get pushed around by the concrete.
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I recommend to start filling the frame without the mesh up to 2/3 of the total height then place the mesh and finish pouring the last 1/3 of the concrete...
:)