I’ve been working on remodeling my master bedroom for almost a year which has been a fun and frustrating design project. Being in San Antonio there is limited access to modern and minimalist elements besides pieces that have been toned down, mass produced, and offered up at Home Depot. Although there are fabricators around, purely custom work is more expensive than I’m willing to dole out right now. The solution?
I’m going to make some of it myself.
The first project is in the bathroom. I have two vanities 24″x 33″ with a 38″ gap between them. The idea is to find a tall chest of drawers (sometimes called a Gentleman’s Chest) to sit between the vanities to break up the horizontal surfaces where the sinks will be. The bathroom originally had a one-piece counter top/sinks. After Googling around for sinks for a while and looking into materials, I’ve decided to cast my own concrete counter top and sink.
I’ve picked the Kohler Purist line for the hardware to match the shower and intend on tinting the concrete to match the grout in the Travertine flooring, an Alabaster color. To start this project, I sketched some designs in a great software package called “SketchUp”. SketchUp works like I think which is in surfaces and solids. Most cad packages I’ve played with tend to deal more in lines which make mocking up a room design super tedious and I’m just not that patient or absolute. SketchUp lets you define a rectangle, then flip orientation, grab a surface, and extrude it into a 3D shape. Very easy. Very intuitive for me. My sketches came together in a few hours and I got a basic idea of what I want.
Sketching on a laptop screen is cheap and easy but runs its value when you try to visualize proportions and context. To help get a better sense of perspective, I decided to prototype the vanity top. Thinking about how to do that, I needed a material that would be easy to work with and cheap since I’d be throwing it away. At a local hobby shop, I looked at foam core board and sheets of Styrofoam but I needed to span almost three feet and carving Styrofoam is very messy and not very exact. Heading to Home Depot I found a nice solution. In the lumber area, I grabbed a piece of insulation sheeting. For about eight bucks I got a 4′x8′ sheet of 5/8″ thick pink boarding by Owens Corning.
Over the weekend, I gathered up some tools (hobby knife, tape measure, fine point Sharpie, tape, calculator) and set out to build a fake counter and sink. Since I was designing around proportions, I whipped out Phi, the golden ratio, 1.618 which is supposed to define intrinsic beauty by resonating with geometry of nature. My sink is minimal so taking the length and width of the vanity and dividing them by Phi gave me the sink dimensions. By taking these base dimensions, I then divided again until I had all other dimensions.

Using cardboard from a 12-pack of Coke I cut out place holders for the faucets and handles based on the Rough-in diagrams from Kohler. After seeing the sink in its real environment, the sink looked too deep. I took another dimension, divided by Phi, and cut out a new sink wall. Much better. With the depth was set, I cut out the other three walls and the sink prototype was done.

I’m leaving this fake pink sink in place to live with it for a few days and see how the proportions in context work out. To complete the illusion if the pink throws me off, I’ll paint it with some off-white latex paint. Then all I have left to do is figure out how to actually make this sink.