Reply by CaptainKlutz

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Posted on How much mattress size allowance on bed frame?

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3610 posts in 2350 days

#1 posted 12-05-2018 09:33 PM

Hate making wood bed frames. Have refused every request for wooden bed frames after making a couple. Here’s why:

1) The universal standard dimensions vary a lot depending on geo-location of mfg:
Yes, there are many different sizes for ‘KING’ bed.

2) It’s rumored that mattress mfg typically allow for +/- 1 inch (or +/- 2 cm metric) in finished size of base of mattress. (Does not include extra width from compression of luxury pillow top materials)
=> Means side support rails for mattress needs to be 3-4 inches wide, and can stick out a ways from side; unless made to fit a pre-measured mattress..

3) Need to allow room for bedding materials, but spacing at top can’t allow pillows to disappear in crack.
=> Tall foot board designs require extra depth away from mattress and likely custom stop blocks to keep mattress pushed towards the head board to allow for bedding.

Recommend either:
- Measure actual mattress and make frame 1/4 inch larger to fit exactly. Replacement mattress shopping requires a tape measure.
- use design with adjustable side rail locations to allow rails to move in/out to adapt to actual mattress used. Can use commercial slots/hardware, or through mortise with external wedge to secure and wedge(s) to adjust location (stone age or timber frame style, not shaker style – sorry).
- Use a metal bed frame, and make head/foot boards to bolt onto the commercial hardware that adjusts to fit common mattress sizes. Attach wooden trim pieces to metal rails to hide the frame.
- make flat platform with no side rails, and use double sided carpet tape to keep mattress from sliding off the platform. These can be a an inch too small and still provide good support.

Best Luck.

-- If it wasn't for bad luck, I wouldn't have no luck at all, - Albert King - Born Under a Bad Sign released 1967

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