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  #1  
Old 02-22-2012, 12:21 AM
tobias tobias is offline
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Bronze casting success

So I decided to cast some of my own bronze. It all started half way through last year when I could not keep up with demand for these hanging pieces. I decided to talk to my local foundry. I went in expecting it to be pricey. I know the mold making process takes time and that equals money.
What I got from them was a huge shock for me. They wanted $750 for the mold. (Cheap I was expecting more like $1000) . Then they tell me it will be $900 per unit after this!!!! I had told them just cut off the sprues and give it to me I can handle the welding and clean up.
Now let's get this straight I clear $1000 after gallery and materials cost on original pieces. They want all of this just to pull a wax and cast it??? I say ah go f#$@ your self. I've got a forge that will get my stainless to a point that it drips. I have cast gold and aluminum lots so screw them. The only thing im not sure on is the price of the bronze alloy. So I order some. 20 pounds delivered to my door $180. Ha I'm gonna be able to cast 7 units from that. That's roughly $25.71 per piece. I make my own mold for about $200. I use paro and beeswax. This takes some messing about as wax is very shrinky. It's all temp control. And I'm about 20 bucks for wax so far. Let's just check this out I've got my mold for $200 ( smooth on silicone) about a $550 savings. I cast one for around $30 including wax. Thats around $870 saved. So far I've saved $1420.
I did use old dental investment but you can't tell me that it's gonna cost $450 for ceramic shell. That number assumes that materials and labour are about the same.
I know that I'm special but this casting stuff is not difficult it's been done since before the Egyptians man!
Any how here it is.
Oh yah Biomorph you want proof it did it? Video coming to my blog soon. Or just come on over to cow town and I will do my best not to splash you with hot stuff. Lol
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  #2  
Old 02-22-2012, 12:28 AM
tobias tobias is offline
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Re: Bronze casting success

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  #3  
Old 02-22-2012, 01:30 PM
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Dries Dries is offline
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Re: Bronze casting success

Congratulations on a successful cast. What are the dimensions of your sculpture, itís a bit difficult to judge from the picture.

Last edited by Dries : 02-23-2012 at 04:56 AM.
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  #4  
Old 02-23-2012, 08:49 PM
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obseq obseq is offline
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Re: Bronze casting success

Yeah, mold prices are going to be steep all around, especially in ceramic shell.
In short, the high price for a shell mold can be attributed to a few things:
-Slurry isn't cheap
-Running the slurry mixer/vat 24/7
-Depending on foundry preferences, building up from anywhere 5-12 layers of fine-to-coarse sand+slurry which totals several days of drying between all of the dips.

Anyhow, nice going on doing this yourself!!!
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  #5  
Old 02-23-2012, 09:28 PM
tobias tobias is offline
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Re: Bronze casting success

Well Obseq we will see. I've got about 60 kilos of old out dated dental investment that I took when I left my job as a dental tech. It's been sitting around for about 4 yrs now. when I run out of that I will most likely switch to ceramic shell. I will let you know how it works out price wise.

Dries it's 12&3/4 inch from finger tip to finger tip. Solid cast. Next one I will document the whole process.
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  #6  
Old 02-29-2012, 06:44 AM
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racine racine is offline
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Re: Bronze casting success

how long is this piece Tobias? am curious about US pricing. here i let people do their own work and charge for the ed and materials only, which reduces- the less they need me -to a studio/mat fee. which is basic compared to the west i think. sometimes i am asked to 'foundry' cast a piece for someone, i throw out a best guessed price [often based on wether i want to do it] but dont really know
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  #7  
Old 02-29-2012, 09:44 AM
tobias tobias is offline
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Re: Bronze casting success

Racine I'm in Canada not the US. The length from head to toe is about 16 inchs. The widest part is 1&3/16 of an inch. What would you price this per cast?
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  #8  
Old 03-02-2012, 09:27 AM
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racine racine is offline
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Re: Bronze casting success

ah so Canadian dollars.. i guess about that less 20% it would be hollow not solid. but to be honest i rarely touch jobs..too dull. prefer to teach people how to do it themselves and it works out even cheaper...
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  #9  
Old 04-07-2012, 08:46 AM
tobias tobias is offline
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Re: Bronze casting success

Wax

Hot stuff

Cool stuff

Any questions?
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  #10  
Old 04-08-2012, 12:07 PM
KatyL KatyL is offline
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Re: Bronze casting success

That looks like a lot of grinding marks. The waxes looked good. What happened to the surface of the bronze?
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  #11  
Old 04-08-2012, 12:12 PM
KatyL KatyL is offline
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Re: Bronze casting success

Oh, I am adding that although I respect foundries, I also think all artists who want to do work in lost wax ought to go through the entire process. I've been a little short of money recently, but I am definitely going to end up doing my own foundry work. A lot of reading and learning to do on that one.

I have been charged quite a lot for foundry work, and do not see why I should not be able to do the work myself for much less money.
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  #12  
Old 04-10-2012, 11:17 AM
tobias tobias is offline
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Re: Bronze casting success

KatyL there are a lot of grinder marks. They are in the wax as well. I like the way it looks so I leave them. I have how ever thought about bringing one to a high shine then burning it to get a nice smooth oxide.
Yes KatyL I am with you %100 every one should give casting a try it's very rewarding and exciting! You will save money if you do it your self. I'm saving around 700 per unit.
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  #13  
Old 04-12-2012, 08:56 AM
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Owen Weng Owen Weng is offline
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Re: Bronze casting success

Hi Tobias,
Will you do patina on this bronze sculpture ?

Quote:
Originally Posted by tobias View Post
KatyL there are a lot of grinder marks. They are in the wax as well. I like the way it looks so I leave them. I have how ever thought about bringing one to a high shine then burning it to get a nice smooth oxide.
Yes KatyL I am with you %100 every one should give casting a try it's very rewarding and exciting! You will save money if you do it your self. I'm saving around 700 per unit.
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  #14  
Old 04-14-2012, 11:40 AM
tobias tobias is offline
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Re: Bronze casting success

Owen. No patina I like the metal.
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