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#1116 - 07/20/10 10:43 PM photos of my foundry and casting
machinemaker Offline
MBN member
Registered: 06/29/10
Posts: 40
Loc: Pennsylvania
being new to the forum, I thought that I would share a photo of the foundry furnace I built and a shot of us casting.
kent

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#1118 - 07/20/10 11:12 PM Re: photos of my foundry and casting [Re: machinemaker]
teoc Offline
MBN member
Registered: 02/20/10
Posts: 110
Loc: Carroll County, Mississippi
Wow, thats a pretty serious setup. How about some specs? Fuel? Metal type and capacity? From the yellow on that crucible, i'd guess iron. Natural gas or oil?


Edited by teoc (07/20/10 11:13 PM)
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#1120 - 07/20/10 11:30 PM Re: photos of my foundry and casting [Re: teoc]
Davie Sprocket Offline
New in town
Registered: 05/01/10
Posts: 24
Loc: Leduc AB
Wow very cool puts my little gingery fournace to shame. Nice pics, bump for the post above we need more details.

Dave
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#1135 - 07/21/10 08:42 PM Re: photos of my foundry and casting [Re: Davie Sprocket]
machinemaker Offline
MBN member
Registered: 06/29/10
Posts: 40
Loc: Pennsylvania
I have been casting bronze sculpture for about 30 years and in general like to build equipment. the furnace is propane fired and we cast 240 Lbs of silicon bronze at a time. Like most artists I have never been able to support the family on sculpture sales, so I have always worked in manufacturing, mostly metal working forever. Most of my personal machine building has been to furnish my shop over the years. I do a fair amount of scrounging for materials, part out and sell what I don't think I need. I am hoping to get into doing cast iron in a couple of years and do some sand casting.
thanks, kent
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#1140 - 07/21/10 11:39 PM Re: photos of my foundry and casting [Re: machinemaker]
teoc Offline
MBN member
Registered: 02/20/10
Posts: 110
Loc: Carroll County, Mississippi
Check out Lindsay Books if you're wanting to try iron. They have some good books on the subject, as well as casting, patternmaking, forging, metalworking in general, survival, etc, etc. lol, a real gold mine.
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#1173 - 07/24/10 02:29 PM Re: photos of my foundry and casting [Re: teoc]
patience Offline
MBN member
Registered: 07/23/10
Posts: 33
machinemaker,

Looks like you're doing investment casting? I've done a little sand and some permanent mold with aluminum, but no investment casting. But I was thinking things like jewelry, on a table top. I've seen industrial investment casting making jet engine vanes, but what you are doing there looks huge by comparison!

What do you use for the mold? Hydrocal, maybe? Are those big molds cored?


Edited by patience (07/24/10 02:31 PM)
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#1181 - 07/25/10 03:47 AM Re: photos of my foundry and casting [Re: patience]
machinemaker Offline
MBN member
Registered: 06/29/10
Posts: 40
Loc: Pennsylvania
Right now all I do is ceramic shell molds. It is a fused silica material and if I open the interior of the waxes up the ceramic is both on the exterior and interior, kind of a core, but the shell is mono lithic. It is easier to cast in pieces and weld the pieces together to make a larger sculpture. some get fairly large, the ring on this piece is 60" diameter:



Edited by machinemaker (07/25/10 03:48 AM)
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#1191 - 07/25/10 08:50 PM Re: photos of my foundry and casting [Re: machinemaker]
sonny Offline
MBN member
Registered: 02/17/10
Posts: 249
Loc: Illinois USA *****
NICE SET-UP!!!---work looks excellent!---Keep posting on your work! thanks; sonny
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#1242 - 07/28/10 02:19 AM Re: photos of my foundry and casting [Re: sonny]
Sawfish Offline
New in town
Registered: 07/18/10
Posts: 9
Loc: East Central Mississippi
Nice work. How could you do that on a really small scale? Like for making jewelry?
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#1270 - 07/29/10 05:59 AM Re: photos of my foundry and casting [Re: Sawfish]
patience Offline
MBN member
Registered: 07/23/10
Posts: 33
From what I've read, investment casting to jewelry is usually done with some sort of centrifugal unit that helps fill the molds. Entrapped air is a big problem with that, it seems.

I haven't done it, but the literature I found shows a spring loaded casting arm on a pivot. There is a small crucible mounted to one end of the arm, with the mold adjacent, so when the spinning action is started, metal is thrown into the mold by centrifugal force. The arm has a simple counterbalance weight on the other end, but adjustable to suit the current project.



Edited by patience (07/29/10 06:00 AM)
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