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Casting LARGE Loadbearing parts

kryptosdaddy

Active member
Hope I'm not breaking the rules here- read this and you'll get the point....


Doing a tub swap for an older couple this week, folks are loaded- they converted a two bedroom Civil War era house in Columbia into a single with a huge bath.The man planned and built the changes himself- in a really nice Tim Allen move he builds a platform in that converted bed room and places a cast iron tub on top. This is one of those Elizabethan -I think- it has the two facet dropouts cast into and the feet are claw/balls.
10 years later she wants a Jacuzzi, so he buys a handicap jet tub with a side door- I'm piping it tomorrow. had to change 20' of M copper today. That red stripe shit washed to the point where it wouldn't take heat. I took it back to a tee and replaced both lines then we removed the old tub and set the new.
before we removed the cast iron tub i stripped the fixtures and set them inside the tub- turned around and that was gone! lol

They kept the faucet- a nice old Price Phister with a sprayer - and gave me the tub....shit he even helped put it in the truck! Cast Lion Claw with the ball, and the feet are perfect. Someone had redone the tub years ago and the newer finish was flaking.Damn thing has NO rust spots She said it had to go Crazy but Nice bonus.



----I wrote this last night for a plumbers discussion group I'm a member of- I write sometimes and usually save my stuff- looking at those feet got my brain rolling...Most cast tubs have buckles on the bottom for the feet, and the feet are bolted on. I took the feet off mine yesterday and looking at them began wondering if you could cast these cold with a resin- and thats my question, is there a resin or something similar that you could pour that could reliably hold that weight? If so the possibilities are endless... spikes, heads, skull, big baseballs -whatever. There is a ton of money out there from the esoteric and the industrial lovers out there.

I think with the casting question, this could be viable as a modeling topic. Hope so. Any help?
 
Never casted a part so I can't help. But knowing what that tub weighs I doubt what we use in modeling would be strong enough to support, even with reinforcement in the cast.
 
For what it is worth I would make the supports out of wood and do a fiberglass layup over top to seal out moisture.
 
I think you'd be very hard pressed to find any kind of pure resin that would support the kind of weight that would be there.

Going to guess that the tub itself probably weighs somewhere around 300+ lbs, and then figure an average somewhere of about 45-50 gallons of water which is going to come in at 375-420 lbs, plus the occupant, say on average 150 lbs. So on the heavy side, you'd be looking at close to 900 to 1000 lbs. So each leg would have to support over 200 lbs, which I just dont think resin would do.

Supporting that kind of weight I would think would have to be done w/ metal that would have to be cast in molds.
 
Here what to do- build a welded-on central pedestal to support the tub- big and flat. Then make any resin "legs" you want for the corners. It'll have the illusion of the legs holding the tub up. Cut me in for a nice percentage, willya? :dude
 
You got it- you could mold those around #5 rebar. That would hold that tub up for sure- That was the answer i was waiting on. Thanks Chuck.
 
Here what to do- build a welded-on central pedestal to support the tub- big and flat. Then make any resin "legs" you want for the corners. It'll have the illusion of the legs holding the tub up. Cut me in for a nice percentage, willya? :dude

Better yet, make the legs a little shorter than the support and make the tub look like it's floating... :woohoo:

niche market, I know. :drinks
 
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