Tapered legs HELP AND ADVICE - Woodworking Talk - Woodworkers Forum
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post #1 of 12 Old 07-15-2016, 10:34 PM Thread Starter
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Tapered legs HELP AND ADVICE

Hey everybody. ... I'm in the processing of making a little tv table. It's simply table approx. 30x17 with a shelf 12" down. The legs are 24" long tapered from 1 1/2" stock. The tapers came down way smaller than I had originally planned... they tapered down to 1/2". Do you think this is too small to support the weight of the maple table top and shelf? The shelf will be notched and joined with dowel pins. Did I just waste 50$ of walnut? If you guys think it's too small at the bottom I could cut off several inches but I really wanted the 24" height. Let me know what you guys think... please note the pics. .. thanks!!
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post #2 of 12 Old 07-16-2016, 06:49 AM
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How heavy are the things that will be on the table and shelf? It may not be as bad as you think.

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post #3 of 12 Old 07-16-2016, 07:27 AM
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Wood is very strong in compression. Other parts of your table will fail for whatever reason far sooner than the legs will fail in compression.

Do not worry.

George
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post #4 of 12 Old 07-16-2016, 08:04 AM Thread Starter
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Quote:
Originally Posted by sbrader View Post
How heavy are the things that will be on the table and shelf? It may not be as bad as you think.

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Just a TV. .. they're light.now a day and on the shelf just the cable box DVD etc.. nothing heavy
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post #5 of 12 Old 07-16-2016, 08:04 AM Thread Starter
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Quote:
Originally Posted by GeorgeC View Post
Wood is very strong in compression. Other parts of your table will fail for whatever reason far sooner than the legs will fail in compression.

Do not worry.

George
Thanks George
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post #6 of 12 Old 07-16-2016, 08:11 AM
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I don't see any reason the table legs wouldn't work. The only problem might be dragging the table. If you always put air under the legs when you move it you shouldn't have a problem.
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post #7 of 12 Old 07-16-2016, 08:18 AM
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the crush strength of walnut (ie crushing parallel to the grain) is
on the order of 5,000 to 7,000 pounds per square inch.

1/2 x 1/2 = 1/4 sq inch x 4 legs = say, 2-3 tons.

it'll work.
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post #8 of 12 Old 07-16-2016, 08:53 AM
where's my table saw?
 
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The wood will work, but now ...

The strength or rigidity of any assembled structure depends on the joi8nery, whether it's a wood truss or a table. Yes, wood is very stong in compression, probably quite good in shear, fair in tension, but it all depends on the method of joining the pieces. Mortise and tenon joints are favored over others because glue alone is not sufficient. Screws into wood will fail when they become loose and forces are applied.

So, use the best method of joinery you can even if it means more hours and hand work and you will have a lasting piece. The long, thin legs are like "levers" when force is applied at the bottom... it won't take much over that length to apply a lot of force at the joint.
M$T joints provide more long grain gluing surface which is always what you want for a strong joint. End grain glue joints are weaker in comparison. M &T joints even assembled without glue are structurally sound of them selves.

:smile3:

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #9 of 12 Old 07-16-2016, 09:19 AM
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I like the look of thin legs ... they should work fine if ...
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post #10 of 12 Old 08-06-2016, 02:47 PM Thread Starter
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Tables finished. Thanks for the encouragement. Labs are uneven though.. not too sure why! Oh well... thanks!
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post #11 of 12 Old 08-06-2016, 02:57 PM
where's my table saw?
 
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The frame may be twisted...?

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Tables finished. Thanks for the encouragement. Labs are uneven though.. not too sure why! Oh well... thanks!
The legs can be of equal length, but if the whole assembly has a twist, the table will "rock" even on a level surface. If you shim the low leg, how thick is the necessary shim? ... 1/16" or more?

Gook looking table, regardless!

The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
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post #12 of 12 Old 08-06-2016, 03:14 PM Thread Starter
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Thanks! I'd say the gap is 16th. However with TV on it it levels out. I'm gonna try my best not to obsess over it lol. But a shim would probably do it
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