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I wanted a challenge to see if I could make the KALLAX units unique after we received them for free. Plus they fit the bill perfectly as home office furniture.

IKEA items used:
Other materials and tools:
  • Oak plywood (2 sheets)
  • Knobs
  • Table saw
  • Miter saw
  • Biscuit joiner (can be done without this)
  • Brad nailer with 18g nails

KALLAX home office furniture step-by-step:

1. Build your KALLAX units. Add any cabinet doors or drawers you want. Add some funky knobs to spruce up the design and give it a pop of color.

KALLAX home office furniture

2. Cut the first top piece to length and width of the KALLAX unit and set in place. Use this to determine the angle for the miter cut.

KALLAX home office furniture


Related: KALLAX grows up into a glamorous credenza


KALLAX home office furniture

3. Repeat this process for the second top piece. Use the first miter cut to mark the second miter cut. This allows you to keep the joint as tight as possible.

KALLAX home office furniture

4. Use a biscuit joiner to carve out matching grooves on the miter cut of each piece. This helps make the joint stronger, while keeping it level while joining the two pieces. Add wood biscuits (with wood glue) and clamp the two pieces together in as many ways as possible. Let this cure for roughly 30 minutes.

KALLAX home office furniture

KALLAX home office furniture

5. Add a wood brace across the joint on the underside of the countertop. This will help the two pieces from spreading down the road.

KALLAX home office furniture

6. Use wood filler to fill any gaps in the miter joint. Then sand any excess wood filler after it cures.

KALLAX home office furniture


Related: KALLAX turned into high-impact room divider


7. Set the countertop on top of the units.

KALLAX home office furniture

8. Measure and cut the ‘waterfall’ end panels on each side of the countertop. Check to see how plumb the walls are before assuming the pieces will be cut perfectly square. Use a brad nailer to attach the waterfall end panels. I only joined the side panels to the top panels. There are no nails into the actual KALLAX unit anywhere.

KALLAX home office furniture

9. Use a table saw to cut 1 1/4″ wide strips out of oak plywood. These will go inside the top and edge panels of the countertop. Use a miter saw to cut the inner edge pieces to length. I mitered these corners as well to match the overall design.

KALLAX home office furniture

10. Clamp (to hold) and attach the edge pieces with a brad nailer. You only need a few nails to fix them in place.

KALLAX home office furniture

11a. Stain the entire countertop in the color of your choice. I used walnut for this build.

11b. Seal the unit with polyurethane and let it cure for 3-4 hours. Give it a light sand with 220 grit sandpaper.

KALLAX home office furniture

12. Repeat step 11b to get a nice smooth and solid finish. And your KALLAX home office furniture is done!

KALLAX home office furniture

Total cost for the wood and knobs is roughly $200 dollars. We received the KALLAX units for free. Cost for cabinet doors and drawers was around $140 dollars. This is all in Canadian, by the way.

The hardest part of the whole hack is getting the miter joint on the top of the countertop as tight as possible. As of right now, I wouldn’t change anything, but that may change the longer we use the unit.

See the complete tutorial of the KALLAX home office furniture unit.

~ by Jeff Havixbeck