Southeast Michigan Woodworkers

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PostPosted: Mon Jul 24, 2017 11:18 pm 
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Elite

Joined: Sun Jun 30, 2013 8:51 pm
Posts: 499
Location: Warren MI.
I built a rack/shelf that will be used to store canned foods like vegetables & soups.
It's designed to be free standing, But I will also be fastening it to the wall to prevent it from tipping.

Overall size is roughly 6' tall by 3' wide & is made from 1" x 8" stock so it's 7-1/4" deep.
The shelf's are glued & nailed into 3/4" wide by 3/8" deep dado's, The two rear center brace's are mounted into the back of the shelf's with 3/4" wide by 3/8" deep dado's & matching 3/8" deep recesses to make them flush with the back.

Each shelf will hold around 20 ~22 cans which will be about 20lbs. ~ 25lbs. per shelf.
With the sides & rear of the shelf's held together with the dado's I pretty sure they are not going to bow or sag any! But being the front of the rack is not supported for the 3' width of the shelf's, I'm wondering if I should add a small brace placed in the center to prevent any bowing or sagging?

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Doug


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PostPosted: Tue Jul 25, 2017 3:21 am 
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Elite
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Joined: Sat Feb 28, 2004 10:12 am
Posts: 774
Location: Brownstown,Mi.
you can check this http://www.woodbin.com/ref/shelf-sag-8inch/
might be what your looking for.
Wid T

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PostPosted: Tue Jul 25, 2017 7:57 am 
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Master
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Joined: Wed Apr 10, 2013 11:13 am
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Location: Dearborn, MI
I have a shelving system that I built from 1x6 common pine and its been working fine. I did have a plywood back on it that i glued on but i didnt dado the shelves into the sides because i didnt know better at the time.

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PostPosted: Tue Jul 25, 2017 9:12 am 
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Obsessed
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Joined: Tue Aug 22, 2006 1:39 pm
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Location: Livonia
Doug - being solid wood (not plywood) it has good longitudinal stiffness, and at less than 8" depth, I think you're going to be good. I have four cabinets in my shop that are 48" wide, with 9" wide shelves made of plywood edged with about 2" of solid wood. They have sagged a fraction of an inch over many many years with cans of finish stacked on them.

I think you won't have a problem.

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PostPosted: Tue Jul 25, 2017 9:39 am 
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Elite

Joined: Sun Jun 30, 2013 8:51 pm
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Location: Warren MI.
Wid T. wrote:
this might be what your looking for.

Thanks for the link Wid T! :s_cool That reassures me a little :s_thumbsup

According to the chart I'm well with-in the minimum specs for the weight/load & span per shelf. I thought it should be fine the way I built it, But I really wasn't sure about the 3 foot span along the front.

Doug


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PostPosted: Tue Jul 25, 2017 10:38 am 
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Joined: Sun Jun 30, 2013 8:51 pm
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Location: Warren MI.
Steve Sawyer wrote:
being solid wood (not plywood) it has good longitudinal stiffness
Actually it's even a little better than "Solid Wood" It was "Free Wood"
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I still have a bunch of 1 x 4's left that I'm planning to use for a lumber rack.

Steve Sawyer wrote:
shelves made of plywood edged with about 2" of solid wood. They have sagged a fraction of an inch over many many years with cans of finish stacked on them.
Yeah I have some shelves I built years ago with 3/4" plywood edged with 2" x 2" stock & rabbeted to match the plywood's thickness. They also have worked fine for years without sagging, Even with being loaded with motors & machine parts. :s_omg (Shelves in the background of the first few pic's)

Doug


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PostPosted: Tue Jul 25, 2017 7:41 pm 
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Obsessed
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Joined: Tue Aug 22, 2006 1:39 pm
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Location: Livonia
Doug Walls wrote:
Actually it's even a little better than "Solid Wood" It was "Free Wood"


Yeah - that's the best!! :s_yes

In the course of expanding my shop I did some demolition to remove an office space and cedar closet. I ended up with a half-dozen 12" x 13-foot knotty pine planks (built-in bookshelves in the office). Every one of them got used.

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A bad day working with tools is better than a good day doing most of the other things I have to do.
blog: http://www.stephensawyer.com


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PostPosted: Wed Aug 02, 2017 11:32 am 
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Obsessed

Joined: Wed Jan 04, 2006 8:12 pm
Posts: 1837
Location: Ypsilanti
There is also something you can look up called "Sagulator". I don't know if it is the same as Wid's link. It will ask the weight you plan to put on each shelf and its dimensions.


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