I created this cantilevered coffee table from a live-edge spalted maple slab and concrete. The angled concrete post was formed by slicing two sections from a standard 12" concrete form tube with a 15 degree angle, attaching these sections to the live edge slab, and pouring the concrete through the slab to form a solid post base extending through the table top. To cut the 12” concrete forming tube at a 15 degree angle, I created a 12” miter box from scrap plywood.
I again used a white glass-fiber reinforced concrete (GFRC) concrete mix, and this time, poured in the face coat for the table surface. For the backer mix, I used plasticizer to make a self-consolidating (SCC) type of GFRC.
Pre-Blended GFRC Mix: http://www.concretecountertopsupply.com/Item/GFRC_Bag_Mix
AR Glass Fibers: http://www.buddyrhodes.com/alkali-resistant-ar-glass-fiber/
Recipes to make your own GFRC: http://www.concretecountertopsupply.com/index.php?app=cms&ns=display&ref=GFRC_Mix_from_scratch
Other Tools Used in the Build
1.5” Bottom-cleaning router bit: http://amzn.to/2wlNNeE
Cake Fondant Tool for perfect caulk lines: http://amzn.to/2w0JCVx
Diamond Polishing Pads: http://amzn.to/2gmxUkt
Concrete Forming Tube: http://amzn.to/2wlNelc
Japanese Razor Saw: http://amzn.to/2wPHdQU
18” double edge saw: http://amzn.to/2wfnNDy
Waterlox Finish: http://amzn.to/2wlUgWY
Quality, but reasonably priced, concrete mixer: http://amzn.to/2wcC6bZ
Bosch circular saw: http://amzn.to/2wcDgnN
Dewalt Table Saw (32.5” rip capacity): http://amzn.to/2vH2pTY
Bosch drill and impact driver: http://amzn.to/2wQ2OZk
Dewalt Router: http://amzn.to/2wlFoYI
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Music: Something Elated by Broke For Free, used under Creative Commons Attribution 3.0 license (CC BY 3.0 US)