Friday, January 2, 2009

It's CAN-tilever, not CAN'T-ilever

I built some cool shelves this week. Thanks to Mathhias Wandel at Woodgears for the design and inspiration.



I like the design because it makes use of a cantilever bracket that seems to give the shelves an air of lightness while belying their real strength. The shelves ( made from 3/4" plywood) are attached to the supporting wood. Attaching them in this way stiffens the shelves and distributes the weight of the load across the brackets more efficiently than if the plywood was simply laid across the brackets.



I suspended the shelves from the floor joists using simple carriage bolts. The whole thing is hanging from the joists. If we wanted to, we could easily swing the unit up out of the way for... I have no idea why.



The shelves are remarkably strong. I (183 lbs) can hang from them with no sagging. Of the shelves. I still sag.

12 comments:

Owen said...

I think your cantilevered shelves are excellent. I like strong shelves that are simple and effective.

Why did you chose not to notch your shelves so they would fit around the 2x4s and rest flush with the back wall? This would keep things from falling off the back.

Do you see any problem with notching the shelves?

Do you have any other thoughts or suggestions for me before I build shelves like these?

Thank you very much.

Sincerely,
Owen

John I said...

I left the notches out because it was simpler to construct that way. I was able to cut the material from a sheet of plywood with just two cuts.

I don't see any issue with notching. Notch away!


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Bryan said...

Why doesn't the wood of the cantilever split, with six nails (three each side) all in a row?

John I said...

(I pre-drilled pilot holes and was careful when I tightend them)

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Bob said...

How deep are your shelves? Mathhias Wandel said he made his 14 inches deep.

Could this design be expanded to make shelves 18 inches deep?

John I said...

The shelves were cut from a single piece of 4 x 8 plywood, so they are roughly 16 inches wide. With the 3.75 inch overhang the gap between the back edge of the the shelves and the wall affords, you have approximately 20 inches of potential storage space. It will work as long as whatever you put on the shelf can stay in place over the gap.

Brian Chan said...

Would it be possible to modify the design to use the studs in the wall as support instead of the wood down the back?

John I said...

Of course!

Steve said...

Great design. I was planning on 24inch shelves, so other than increasing the length of the support to match the outside edge of the actual shelves, is there anything else I need to adjust to give equal support?

johnB said...

has anyone built these with a clothes rod hangng below the outermost 1x4 plank? Seems like they should be strong enough. I am trying to add a virtual closet in my basement where we can hang some clothes and have an upper shelf. Any suggestions?

John I said...

I don't see why not. The shelves are very strong.

PaulM said...

Do I need to change the dimensions of the supports if I want to use 24" shelves.If yes then what should they be?