Unstable as table

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    Posted: 29 Nov 2023 at 9:15am
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I'm building a foldable rimu table for my house bus on a pedestal leg. The leg is central, aluminum 55mm with a tapered plastic fitting each end which inserts into a mounting plate on the floor and underside of the table. There is far too much movement between the insert and mounting plate. One bump and drinks would go flying ( not a welcome scenario at all).
Question is, how could I add more stability without adding more legs?





Plywood at the bottom is just for testing things out.

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Post Options Post Options   Likes (0) Likes(0)   Quote Uncle Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 1:18pm
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you need a skyhook, lol
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Post Options Post Options   Likes (0) Likes(0)   Quote Kevin.S Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 1:47pm
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Change the fittings that you are using.  I had a similar table when we had a motorhome.  I can't remember what the fittings were but don't remember there being any plastic in them.  Two things will make it stable, the fit between the pole and the socket it goes in to and the length of the pole that it in the fitting.  Pretty sure the fitting on the floor was like an inverted top hat with nothing sticking up out of the floor when the table was not fitted, the pole was a good fit and didn't wobble around.
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Post Options Post Options   Likes (0) Likes(0)   Quote kitno Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 2:05pm
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Originally posted by Uncle Uncle wrote:

you need a skyhook, lol



I bet you were the kid at the back of the classroom that caused disruptions all day lol

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Post Options Post Options   Likes (0) Likes(0)   Quote Uncle Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 4:09pm
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LOL
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Post Options Post Options   Likes (2) Likes(2)   Quote Phantom Menace Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 5:39pm
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Originally posted by Kevin.S Kevin.S wrote:

Change the fittings that you are using.  I had a similar table when we had a motorhome.  I can't remember what the fittings were but don't remember there being any plastic in them.  Two things will make it stable, the fit between the pole and the socket it goes in to and the length of the pole that it in the fitting.  Pretty sure the fitting on the floor was like an inverted top hat with nothing sticking up out of the floor when the table was not fitted, the pole was a good fit and didn't wobble around.

So basically length and girth matter.
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Post Options Post Options   Likes (0) Likes(0)   Quote v8-coupe Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 7:17pm
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Originally posted by Phantom Menace Phantom Menace wrote:

Originally posted by Kevin.S Kevin.S wrote:

Change the fittings that you are using.  I had a similar table when we had a motorhome.  I can't remember what the fittings were but don't remember there being any plastic in them.  Two things will make it stable, the fit between the pole and the socket it goes in to and the length of the pole that it in the fitting.  Pretty sure the fitting on the floor was like an inverted top hat with nothing sticking up out of the floor when the table was not fitted, the pole was a good fit and didn't wobble around.

So basically length and girth matter.

Friend had a boat with a similar set up.
Their leg slipped into an aluminum tube on the floor and under the table with a nylon bush pressed into each.
Really good snug fit.
Had to lift it almost perfectly vertical or it would not come out.
Had a couple of pins on the end of some string to push through holes to prevent it from swiveling.
leg itself was about 65mmØ from memory.
All homemade and work well.
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Post Options Post Options   Likes (1) Likes(1)   Quote krow Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 8:03pm
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Is it possible to thread 3 allan keys into the base? Screw up tight?
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Post Options Post Options   Likes (0) Likes(0)   Quote kitno Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 11:49pm
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Originally posted by Kevin.S Kevin.S wrote:

Change the fittings that you are using.  I had a similar table when we had a motorhome.  I can't remember what the fittings were but don't remember there being any plastic in them.  Two things will make it stable, the fit between the pole and the socket it goes in to and the length of the pole that it in the fitting.  Pretty sure the fitting on the floor was like an inverted top hat with nothing sticking up out of the floor when the table was not fitted, the pole was a good fit and didn't wobble around.


Those fittings cost about $120 so I'll be sticking with them for now. I saw those flush mount fittings but not practical here as the water tank is up high under the floor.

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Post Options Post Options   Likes (0) Likes(0)   Quote kitno Quote  Post ReplyReply Direct Link To This Post Posted: 29 Nov 2023 at 11:53pm
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Originally posted by krow krow wrote:

Is it possible to thread 3 allan keys into the base? Screw up tight?


Been thinking along those lines. The aluminum base plate has a double skin, not solid. That may cause issues.

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Post Options Post Options   Likes (0) Likes(0)   Quote krow Quote  Post ReplyReply Direct Link To This Post Posted: 30 Nov 2023 at 8:32pm
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is the base and pole going to stay in position? Non rotating? I'm thinking there are some really good epoxy type products around these days or even the grout 2 pot mix used in concrete bolt holes. Do away with the plastic though.
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Post Options Post Options   Likes (0) Likes(0)   Quote kitno Quote  Post ReplyReply Direct Link To This Post Posted: 30 Nov 2023 at 10:59pm
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Ideally I want it removable leaving just the base plate behind.
I'm thinking I might move the pole off centre towards one end and support the other end with 210 x 20 rimu hopefully adding a bracing element.

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Post Options Post Options   Likes (0) Likes(0)   Quote kitno Quote  Post ReplyReply Direct Link To This Post Posted: 30 Nov 2023 at 11:03pm
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The weight off the table top is what's mainly contributing to the instability issue.

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Post Options Post Options   Likes (1) Likes(1)   Quote kimber7wsm Quote  Post ReplyReply Direct Link To This Post Posted: 01 Dec 2023 at 5:28am
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Just put 24 box of beer on one corner. That will hold it steady. The wobbles that occur as the box gets empty, may be related to the lose of weight or maybe due to the alcohol!
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Post Options Post Options   Likes (1) Likes(1)   Quote kitno Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 2023 at 8:18pm
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Problem sorted, replaced the entire pedestal with a higher quality and $269 later. Just need to trim down some bolts and paint the bits that hold the sides up. Thanks for your suggestions.





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Post Options Post Options   Likes (0) Likes(0)   Quote Snappa Geoff Quote  Post ReplyReply Direct Link To This Post Posted: 04 Dec 2023 at 8:48pm
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Nice Craig, another improvement ready for the big roady! Beer
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