Crib for Granddaughter #4: Building and Installing the Mattress Support

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Blog entry by GrumpyCub posted 11-07-2020 06:55 PM 562 reads 0 times favorited 0 comments Add to Favorites Watch
« Part 3: Holes, Holes, Holes Part 4 of Crib for Granddaughter series Part 5: Odds and Ends »

With all the holes drilled, it’s time to build the mattress support. The support itself is just a rectangle. I’ve seen plans that call for a piece of plywood with hardwood edge banding. I had plywood left over from making the ship lap, but it was not long enough to make a solid platform. Rather than buy more plywood, I opted to construct a solid frame, and then cut the plywood I have into slats. This allowed me to use the material I had on hand, and also I think it goes well with the overall look of the crib.

Here you can see where I rabbeted the inside of the frame to receive the slats later.

I added a piece at each corner to create a “stopped rabbet”

The whole frame is glued and screwed together.

Here are the plywood slats set in the rabbets. They will be nailed into place.

The Hanger Brackets

The mattress support is suspended from the crib frame at each corner by a hanger bracket These bracket are fabricated from 1/8” steel bar stock

Here are each of the four hangers cut from the bar. each hander will be rounded at the end and have a hole drilled for a bolt to pass through.

To determine where to drill the holes in the mattress support for the hanger bolts, I cut a piece of scrap to the same length as the overall dimension of the mattress support, front to back. I then bolted the hangers to the crib frame and marked when the hole should be on the scrap.

I drilled the holes in the scrap and then tested the fit. It worked!

After marking and drilling the holes in the mattress support, I was able to install it in the crib.

I was worried that this “hanging” method would allow the support to swing or move. My fears were unfounded. It is very stable.

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