Chris Schwarz's Blog

Get Four Feet Flat on the Floor

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Getting all four feet of a chair or table in the same plane can be a challenge. What makes the task more difficult is that it can be difficult to figure out when you are done with the job of leveling the feet. After all, your shop floor, your workbench or your table saw are unlikely to be truly flat.

What do you do? (Besides buying shag carpet for every room of your customer’s home.)

Here’s how I deal with it. I have a section of plywood that I regularly confirm is flat with the help of a straightedge. After I level the legs of a chair or small table, I flip the project upside down on my workbench and then place the plywood on top of the upturned feet.

If the plywood doesn’t rock on the feet, then I’m done.

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But if the plywood does teeter on two of the feet I can easily see the culprits. I remove the plywood and shave down the high feet with a block plane. Then I test the feet again and repeat until all four feet touch the plywood.

Then I can say with confidence: Your chair is rocking because your floor is uneven. Move the chair to another spot and try again.

— Christopher Schwarz

13 thoughts on “Get Four Feet Flat on the Floor

  1. alegr

    A hint: Cut a hole (1.5″ or so) in your plywood sheet. If you have a proud leg, stick it to the hole and mark the cut line against the surface (scribe by some flat plane iron or an offset chisel).

  2. Kelly Craig

    You could cut a lot of work off your chair building schedule if you just cut one leg completely off. After all, a three legged chair or table will not rock.

    Of course, for chairs like the one in the picture, you might have to lean heavy to the opposite side from which you removed the leg, and the chair might fall over a bit, or a lot.

    Seriously, does anyone else wonder why every restaurant has four legged tables, since so many of them seem to rock. Some to the point of almost being catapults?

  3. rushby.craig

    You said: “After I level the legs of a chair or small table, I flip the project upside down on my workbench and then place the plywood on top of the upturned feet.”

    What do you mean by “level the legs”? Cut them to the same length?

  4. liamrickerby

    I do like the simple solutions, can’t get simpler than that. Quick question, how would you minimise them going out of flat later on? As in after a few hundred bums have sat down on it, the legs will push through a bit more and perhaps irregular on each. Would that just be the nature of the chair?

      1. earthartinc

        I found an odd company in Canada that makes a great slip on clear plastic sleeve with a woven wool pad on them. They do not fall off and wear great. Furniture Feet. Maybe not the best look for an art table, but for chairs and tables that get used on hardwood floors they are a god send!

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