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Woodworking

Steel + Walnut + Butternut Coffee Table

A mixed-material coffee table build combining steel, walnut, and butternut.

Black Walnut top, Butternut shelf, and steel structure. Why spill coffee on anything less?

The Walnut is from a reject pile at an Amish mill and had been sitting outside for 8 months. I used a steel structure to help provide strength for pulling the unevenly dried wood flat, without adding bulk, while still allowing for seasonal wood movement. (…and it was an additional reason — whether reasonable or not — to buy a welder)

We wanted the steel to look dull/matte and not reflective. To do that, I sandblasted some parts, wire-wheeled others, and abrasive-sponged others. I chose this combination of techniques because I have absolutely no idea what I’m doing, and just wanted to find the method that I was the least bad at.

The design effort was greater than it may seem. Here are the designs leading up to it.

Initially contemporary, with auxiliary top Changed to X legs
Half lap X legs with shelf Bought a welder and changed plans
Alas! Steel legs, with supports to hold a wooden shelf.
Alas! Steel legs, with supports to hold a wooden shelf.

There’s a lot of interesting figure going on: The ripples are considered “angel step” I believe, as well as what seems to be a sort of 3-way crotch section, which gives a neat blend of the feathery squiggliness.

Finished with several coats of the 1/3’s mix: 1/3 BLO, 1/3 Mineral Spirits, 1/3 Polyurethane. This combination has proved very durable around our house.

Steel brackets underneath to address warping
To address the warping, I used brackets underneath to pull the sides to the same level.
Testing sandblasting.
Angles are hard.

The natural color and large open pores of the Butternut coordinated nicely with the natural color and open pores of the Walnut.

I used a satin sheen for the last few coats to give a nice soft reflection and hide future afflictions.