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How much mattress size allowance on bed frame?

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Forum topic by CharlesA posted 12-05-2018 02:55 PM 561 views 0 times favorited 7 replies Add to Favorites Watch
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CharlesA

3351 posts in 1995 days


12-05-2018 02:55 PM

I’m building a Shaker moon bed, platform style. King mattress is 76×80. how wide/long do you make it between railes and between had and footboards. I was thinking 77×81, but love to hear from those of you who have made one.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson


7 replies so far

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GR8HUNTER

5099 posts in 910 days


#1 posted 12-05-2018 03:19 PM

best advice I can give you IS HERE :<))

-- Tony---- Reinholds,Pa.------ REMEMBER TO ALWAYS HAVE FUN

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johnstoneb

3054 posts in 2370 days


#2 posted 12-05-2018 03:33 PM

If you have actually measured the mattress I would go with 2” over 78×82. you need to get actual measurements off the mattress you are using. Mattress sizes are quite a bit different from what they are advertised at.

-- Bruce, Boise, ID

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pintodeluxe

5798 posts in 3011 days


#3 posted 12-05-2018 05:52 PM

I leave 1-1.5” space on each side for comforter and bedding.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

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EarlS

1894 posts in 2546 days


#4 posted 12-05-2018 06:02 PM

I’d go with the dimensions of the mattress, side to side and maybe allow for an inch total top/bottom to allow the blankets to tuck in the bottom.

I used 2” when I made my first bed and the mattress slopped around between the rails and always seems to be pushed up against on side rail or the other. That means one side has a 4” space between the side rail and the mattress. It is really awkward to get out of bed like that.

The second bed I made I used 1” and it still felt like there was a lot of side slop.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

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CharlesA

3351 posts in 1995 days


#5 posted 12-05-2018 07:02 PM

who knew I would get advice on how to use bondo? Thanks for all the advice. This is great.

-- "Man is the only animal which devours his own, for I can apply no milder term to the general prey of the rich on the poor." ~Thomas Jefferson

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CaptainKlutz

597 posts in 1692 days


#6 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:
https://en.wikipedia.org/wiki/Bed_size
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.
or
- 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).
or
- 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.
or
- 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.

-- I'm an engineer not a woodworker, but I can randomly find useful tools and furniture inside a pile of lumber!

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jonah

1913 posts in 3496 days


#7 posted 12-06-2018 03:51 AM

I made mine an inch wider and longer than the mattress, so about half an inch on either side.

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