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 07-18-2006, 17:18 Post: 132339
earthwrks

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 make or buy a wrecking demolition ball

Anybody seen, used, or made a wrecking ball of laminated steel plate? A one-piece wrecking ball is too expensive ($3-4000 new). Any opinions on making one of stacked-and- bolted 2" plate that would form a wrecking ball? I need to pick this up and drop it with a skid steer loader to break up 12-18" thick footers and slab floors here in South Miss. A skid steer mounted breaker is another option but out of reach for me right now (new $7000). A local suggested filling a spherical 3' diameter propane tank with concrete but I think it would pulverize the concrete inside after awhile. Am I wrong?






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 07-18-2006, 17:57 Post: 132340
SG8NUC



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 make or buy a wrecking demolition ball

What difference would it make if it got pulverized. You still have the weight. I have seen weights made out of steel plates 3'X 3' X 1" thick. Steel is 42lbs for 12" X 12" X 1" thick. How much weight would you need and what shape would do the best job.






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 07-18-2006, 18:59 Post: 132343
earthwrks

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 make or buy a wrecking demolition ball

If it were pulverized inside it would have the impact of a lead-shot dead-blow hammer, or like dropping a 100 lb. bag of dog food on the floor versus 100 lb. chunk of steel. In either case the nrgy would be absorbed into the ball instead of vice versa.

The shape would be sort of pear-shaped, or like a lead fishing lure weight to some extent, versus round which would tend to roll away; the pear shape would roll in a circle. About 2000lb. I think is what I'm looking at.






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 07-18-2006, 21:30 Post: 132347
SG8NUC



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 make or buy a wrecking demolition ball

If money is a concern it sure is for me. Stack the steel plates for the weight required and weld them together with a padeye centered on top. This could get pricey.

I understand what you are saying about the dead blow hammer, but would this not give you two licks for the price of one. Concrete is cheeper than steel. Maybe lead as a filler dont know the price of lead.

I agree with the pear shape, what if the bottom of the pear shape had a cone. Do you think it may pearce the concrete and help with the seperation.






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 07-18-2006, 22:31 Post: 132355
earthwrks

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 make or buy a wrecking demolition ball

Stack the steel plates for the weight required and weld them together with a padeye centered on top.
>>>>>Stacking was the plan but bolting may work too. A padeye is a good idea but I will grabbing it with a gapple bucket and dropping it from 10 feet up so it will fall how and where it feels.

This could get pricey.
>>>>Yup.

but would this not give you two licks for the price of one. Concrete is cheeper than steel.
>>>>The propane tank or ball is $50 plus about $400 for a short load of concrete. So rather than experiment($) I figuredI'd put that money into the semi-real thing.

Maybe lead as a filler dont know the price of lead.
>>>>Lead would be even more susceptible to denting the steel ball.

I agree with the pear shape, what if the bottom of the pear shape had a cone. Do you think it may pearce the concrete and help with the seperation.
>>>>It doesn't have pierce, in fact if it pierce it will blow a crater shaped hole from below about 5 times the size of the piercing, like a bullet hole in glass. Removing the concrete is no problem with the equipment I've got--it's the intial breaking that is a problem as the footers or "chain walls" as they call them can have multiple rows of rerod in them making it difficult to crack it. The pear shape will concentrate the impact rather than pierce it.






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 07-19-2006, 07:17 Post: 132360
yooperpete



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 make or buy a wrecking demolition ball

The wall thickness of a propane tank is not very thick. If concrete is poured inside and hardens, it gives strength to the tank. Once the concrete breaks up inside (pulverizes) it will not give the tank the same support as before. The tank will then crush or have large dents in it until it fractures.

How about welding together a set of barbells from a garage sale and weld an eye on it. Stacking large (in the middle) to smaller sizes outward you get kind of a RedGreen sphere shape. It should do the trick!






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 07-19-2006, 07:28 Post: 132361
earthwrks

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 make or buy a wrecking demolition ball

Thanks Harold (aka Yooper). If anybody knows about propane tanks it's Red Green.

Barbell weights are cast iron aren't they? I haven't been in a gym in some time so I forget Laughing out loud. Cast iron would end up in pile of shards.






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 07-19-2006, 07:37 Post: 132363
yooperpete



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I've never had a set. I've always thought they were cast steel.






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 07-19-2006, 09:54 Post: 132368
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 make or buy a wrecking demolition ball

earthwrks,

Have you looked at a steel salvage yard? There is a large one about 50 miles from here and they had all kinds of steel items. The one that makes me think of what you are doing is the about 8 foot tall anchor. I would be surprised if you can not find something suitable either at such a place or old construction site/company.

Is the 10 foot drop sufficient to work? Are you able to drop it at speed sufficient to work? It will need to be a free fall.

Is it such you could use one of the chain saws for concrete or would the rebar be a problem for them? There there is blowing them. That may be what the person who suggested the propane tank had in mind. Laughing out loud.






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 07-19-2006, 11:29 Post: 132373
earthwrks

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KT: An anchor? errr? It's gotta be nearly round to concentrate the energy in one small place. Ten feet is as high as the skid steer reaches, so it will have to do. There ship yards supposedly in the area, so I need to look into them. Man, it'd be sooo much easier to find a cheap wrecking ball close by!






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