Decorating, Refinishing

King-size Bed Frame: modern mid-century platform building plans

Diana / November 13, 2017

3 children coming and going out of our bed during the night made purchasing a king bed a no-brainer. Our mattress came to our house in a box and unrolled and expanded on our bedroom floor. All the sleeping space was glorious! I no longer felt like I was getting pushed out of my bed every time a little munchkin joined us. The problem? We needed a bed frame! After forking out the cash for a great mattress we were more than hesitant to buy an expensive bedframe. I found a few online that I loved but just couldn’t hit the “Purchase” button with such high prices. Our solution? We (well, mostly my husband) designed and made our very own Modern Mid-Century platform King-sized bed frame.

Neither of us is a master woodworker but with a little guidance from the experts (aka my father who is a cabinet maker by trade) we were able to create a sturdy, beautiful, practical, and inexpensive bed frame. The total cost of materials adds up to be under $300. The cost will vary depending on the type of wood used. Here is how we did it!
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Material List

Lumber:

  • 4 – 1×8″ boards of your choice- we used Fir (choose straight boards without knots)
  • 1- 2×4″ of same quality wood as the 1×8’s [for the legs]
  • 2- 1×4″ SPF boards [for ledgers]
  • 1- 2×4″ SPF [interior beam]
  • 1 – 2×2″ SPF [for interior legs- these will be hidden by the mattress]

Hardware and Other:

Tools Needed

  • Saw (skill or miter & table saw for legs)
  • Palm Sander & varying coarseness of sanding disks
  • Drill and bits
  • Measuring tape
  • Clamps
  • Saw Horses

King-size Bed Frame Plans

Download and print the plans:
King Bed Frame ISO

KBF iso 1024x439 King size Bed Frame: modern mid century platform building plans

Leg Dimentions

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Plan view

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Side Section
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End Section

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Middle Section

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King-size Bed Frame Building Instructions

  1. Cut all wood to size. Sand down the bed legs and the outer faces of the 1×8 boards. First use a rough sandpaper to even it out and then use a fine paper to finish. Round the tapered leg edges smooth (this can be done with a router if you have it).
    bedlegscut 663x1024 King size Bed Frame: modern mid century platform building planscutsofwood 1024x683 King size Bed Frame: modern mid century platform building plans
  2. Stain and seal the sanded boards and legs. No need to stain what will be on the inside of the bed. Make sure you do all sides of the legs because each side can be seen when the bed is assembled.
    Go to this blog post for the grey toned wood stain instructionsDIYwood stain King size Bed Frame: modern mid century platform building plans
  3. Pre-drill screw holes to prevent wood splitting when screws are inserted.
    Drillholes 683x1024 King size Bed Frame: modern mid century platform building plans
  4. Secure ledgers (that support the bed slats) to the inside face of the side 1×8  pieces with wood glue between them and 1 1/4″ screws at intervals.
    IMG 7231 683x1024 King size Bed Frame: modern mid century platform building plans
  5. Attach legs to the inside face of the end 1×8 pieces with 2″ screws and glue. Create a u-shaped pocket in the center for the middle support to slide into with scrap 1×4 lumber (using glue and 1 1/4″ screws respectively).
    IMG 7230 683x1024 King size Bed Frame: modern mid century platform building plansIMG 7243 1024x683 King size Bed Frame: modern mid century platform building plans
  6. Attach the bed fittings to the leg and the ledger at the corners. Use 2″ screws on the leg and 1 1/4″ screws on the ledger.  Ensure that the fittings are installed so that the side piece is supported by the end piece. Corners should line up to make a crisp edge when the bed fittings are slid together.
    Our bed fittings were longer than the ledger, so we added scrap lumber to accomadate the fitting length.
    IMG 7235 1024x683 King size Bed Frame: modern mid century platform building plans IMG 7239 683x1024 King size Bed Frame: modern mid century platform building plans
  7. Assemble the middle support using the 4 inch mending plates and 1 1/4″ screws to secure the 2×2 legs to the 2×4 support beam. IMG 7236 683x1024 King size Bed Frame: modern mid century platform building plans IMG 7249 1024x683 King size Bed Frame: modern mid century platform building plans
  8. Assemble the bed to ensure everything lines up and is secure and strong. Everything should slide in to place and nothing needs to be screwed together at this point. This is an easy Assemble/Disassemble bed frame plan to allow easy take down and set up if needed.
    IMG 7254 copy 1024x673 King size Bed Frame: modern mid century platform building plans IMG 7256 1024x547 King size Bed Frame: modern mid century platform building plans

 

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We are so happy with the results. Our Modern Mid-Century King-size bed frame turned out just as we imagined. We learned a lot along the way and invested quite a few hours into this project, but are so happy with how much money we saved- even while using a higher quality wood than most factory produced beds.

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If you need more specific instructions on any of the steps leave a comment below and we will answer any questions you have. If we (who have never built anything beyond a key rack and a few knick-knacks in shop class) can build it, you can definitely build it!

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Want to adapt this bed plan to a different size? Just adjust the length and width of the plan to conform to the size of your bed and omit the support beam for anything smaller than a Queen.
Happy Building!

Diana King size Bed Frame: modern mid century platform building plans

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