Putting it together and making the table top

Fig 20

Fig 21

Next make the part to join the leg pieces together on the bottom. This piece should be 28" long by 4" wide by 1.5" thick. Cut away half the thickness of this piece to 3.5" from the end. Set the fence of the table saw so that it allows you to cut away up to 4" from the end of the piece of wood. Next make a series of cuts with a table saw (Fig 20), then break away the remaining wood with a mallet (Fig 21), then clean it out by sliding it side to side on the table saw as you slowly move it forward (Fig 22)

Fig 22

Fig 23

Next set the pieces up the way it would be assembled, using some clamps to hold the pieces together. Use this setup to measure how much space you have Between the uprights in this configuration (Fig 23) to work out how long the horizontal part that holds the uprights together just below the table top will be (Fig 24). It is important to measure this off your assembly, as variations accumulate, and if you just cut it to given dimensions, the pieces might not slide against each other well when the table is put together.

Fig 24

Fig 25

Cut rabbets into the end of the piece to mate with the inside uprights. The cross piece should only reach to the outer edge of the inside uprights. It doesn't need to reach across the parts attached to the legs, as it would look silly overhanging when the sliders are extended in normal position.

Glue another piece of wood to the side of it to allow this part to be screwed to the table top. The finished cross piece is shown in figure 25.

Next drill holes for the screws to hold the table against the table supports and cross pieces. Select what screws to use, then drill to such a depth so that the screws, when bottoming out in the holes, will not penetrate the table top. With a 1/2" thick table top, its all too easy to end up having your screws come out the top.

Making the table top

The objective is to add some trim around the plywood table top to bring the 1/2" thick plywood to about 3/4" of an inch for better visual appeal. The idea is to surround the table with an L-shaped profile (Figure 26)

Fig 26

Fig 27

Cut oak strips about 1"x.25", two pieces just over 2' long, and two pieces just over 3'1" long. Put the dado set into your table saw, stacking it to give you just over 1/2" of cut. Then lower the dado all the way down, and attach a piece of scrap wood to your table saw fence. Next, set the table saw fence so that the amount of cut you would get from the dado is exactly the thickness of the plywood for the top.

With the dado running raise the blade to about half an inch, so any overlap it has with the scrap piece on your fence is cut away while you do this.

Next, cut the trim pieces on the table saw (Fig 27). It may help to run the piece thru more than once if you have any doubt as to whether it was in full contact with the fence and table along its whole length. The advantage of cutting the corner out this way is that any slippage will result in less material being cut, so running it across the saw again will fix the problem.

Fig 28

Fig 29

Next glue the L shaped profiles to the table top. Start by clamping two pieces of scrap to an edge of the table top (Fig 28).

Then apply glue to the L shaped piece and to the edge of the plywood, and slide the L shaped piece against the plywood. Use wedges to push the L shaped piece against the plywood, then use more clamps to force the L piece together (Fig 29). Edge clamps would be really handy for this, if you happen to have lots of them.

Fig 30

Next do the opposite edge of the table top (Fig 30) , and wait for the glue to dry.

Once the glue has dried, flush cut the ends with the plywood, and cut back the trip a little bit to accommodate the L shaped piece reaching under the table a little, and glue the trim on the ends.

After the glue has dried, cut about half an inch off the corners at 45 degrees, and round the corners of that with a knife or sandpaper. Then, with " radius quarter round router bit, round the corners of the top and bottom of the table top. Also sand the inside edges on the bottom, as these will often get touched when pulling the table towards oneself.

Also round the corners of the other pieces, especially the cross piece attaching the legs together, as this piece often ends up being used as a footrest.

Once you have made all the parts, its time to varnish them. This is easiest done when the table is apart. I'd recommend a clear, water based latex finish. Don't varnish the hardwood grooves on the sliders, or you may end up spending a lot of time cleaning them out again to get them to slide freely.

Putting it all together

Assemble the cross piece and the two table support pieces, and put this upside down on the table. Move the assembly so that the table is as far forward as it will go, with the back edge of the top hitting the supports. Center it side to side, and outline were the legs go with a pencil. This will come in handy if you need to disassemble and reassemble the table later.

Insert the screws, then lightly tap them into the table by tapping the handle of the screwdriver with a mallet. (Fig 31)

Fig 31
Fig 32

Next, remove the assembly from the table top, and use the marks created from the screws as a guide to where to drill pilot holes for the screws. Then put it together again. After screwing it back on, check that none of the screws have penetrated the top. If any screws penetrate a little, remove the screws and shorten the tips of the screws a little bit on a bench grinder.

Next, screw the legs together with their respective cross piece, and slide these onto the part attached to the table top. Next attach the castors. In doing so, be careful when picking where to mount the back castors - place them so that the screw holes do not end up hitting the screws from the cross piece holding the legs together.

Apply a little bit of oil or grease to the castors after mounting them, both to the wheel bearing (Fig 32), as well as the bolt going through the swivel mechanism. I find that castors generally only come with grease in the swivel ball bearings, causing the other bearings to often squeak while being moved. The way I use this table is to pull it up to me after I sit down, so having the castors roll freely without squeaking is important.

Final notes

If you want to save a bit of time, you might consider buying a 3/4" thick piece of birch plywood for the top, and just sanding the edges nicely instead of putting trim around it like I did.

I use this wheely desk in combination with a narrow daybed, and a pile of pillows behind me. I use a desktop computer, which I keep on a table separate from the wheely desk. I have just the monitor, keyboard and mouse on the wheely desk. It may also be a good idea to build a bit of a "stand" to hold the CPU case, depending on how you use it. If you do, the best place is probably off to the side, against one of the legs. That way, its least likely to get kicked by the user's legs. I ended up covering the crosspiece on the back with carpet, because I always use that as a footrest.

The maximum height of this table, with 2" caster wheels is 29 inches. If you intend to not mount casters to the bottom, or would like to be able to adjust it to countertop height, just make the uprights longer. For every inch you make them longer, you get two inches of extra maximum height.

When using it with an armchair or couch, however, it's nice to be able to set the table height to its minimum of 22 inches.

Cut list

Part Thick.WidthLength
Top - birch veneer plywood 1/2"34"24"
Top trim - front & back (oak) 3/4"1" 36"
Top trim - sides (oak) 3/4"1" 26"
Leg - bottom horizontal (2) 1.5"3.5"21"
Leg - Table support horizontal (2) 1.5"3"20"
Leg - Upright (4) (spruce)(Note: initially cut larger than specified) 7/8"4.5"16"
Leg - Upright sliders (4) (oak) 3/4"4.5"16"
Bottom horizontal crosspiece 1.5"4"28"
Top horizontal crosspiece part 1 1.5"6"22" *
Top horizontal crosspiece part 2 1.5"3"19" *
* Measure the exact length needed off your work

The pictures and write-up

Here's a quick video I made showing the assembly of a slightly different variation of the wheely desk. Same idea, but slightly more complex joinery:

Jay Bates recently built one of these desks and made a video about it after he built it:

To my Woodworking website