Love Casting

I’m going to my state university, and I’ve got my major, but I also have an interest in silversmith, I took a private class with a local jewelry maker, however I can’t find her anymore, I believe she moved on, but what courses can I take at my university to learn how to do lost wax casting, welding, gem setting ETC?

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Special education in India was present since the pre independence time, with very few schools or NGOs helping intellectually impaired children. Today India has come a long way and made a good progress in the field of disability rehabilitation. Presently India has four national institutes for effective implementation of this special education through various government schemes.

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Hi.

I am a sculptor. I have some cast iron sculptures heavily encrusted with ceramic shell investment mold. I was considering buying a sandblaster unit, but I have a small studio and I don’t like the idea of dust in the air. I wondered if a high powered pressure washer would have the same affect of blasting off the investment. Ideas?

Not normally – and not without introducing some abrasive which will probably be as bad. Another option is bead blasting, but quite honestly given all the health and safety implications plus buying kit you may never use again it would be better to send them off to a specialist shot/sand blaster.

One of my clients insisted on using Cast Iron fan motors for the AHU fan instead of an Aluminium motor. He left it to me to find out the advantages of Cast Iron motors… Pls Help me on this…

Without the details of your application (they are probably confidential), it is difficult to precisely answer your question. However, two reasons that cast iron (Note: most motor casings are actually cast steel not cast iron for NEMA or IEC sized motors) are explosion-proof motors and corrosion resistance. If the AHU is recirculating unit and the air stream MAY have explosive vapors, a DIV 1 or DIV 2 rated motor will be required by code (however, most explosive vapor air applications are once through air –100% Outside Air). If the AHU air stream is a recirculation unit and there are corrosive vapors in the air that might react with aluminum, cast steel TEFC with corrosion resistant coating (such as Corro-Duty from USEM) would be the specification. It should be noted, however, that on smaller sized NEMA or IEC frame motors for general applications, aluminum enclosures have definite advantages for motors: the increased thermal conducitity of aluminum allows for a lower stator temperature than a compariable cast steel enclosure. In motors lower stator temperatures result in improved efficiency (lower i²r loses and smaller fan losses) and longer life. Aluminum enclosures are more expensive than the cast steel equivalent and become cost prohibitive (read no off-the-shelf availablity) at power ratings typically found in AHU applications.
Hope this helps

My new stove should be here any minute, and I’m wondering if you can still use your cast iron skillets on them, or if you have to use different ones? I don’t want to scratch the shiny pretty top, but I really love my cast iron.

I just bought a smooth top stove as well, and I never even thought of that!

I did a search and heres some info.
http://ths.gardenweb.com/forums/load/cookware/msg0318154214697.html

It looks like the main problem would be possible scratching if you aren’t careful.

Well… from what I know about cast iron, it’s pretty tricky and if you drop it your fudged, and from what I know from google, solid brass is what a lot of them are using.

I’m sorry I can’t be of much help, but I’m sure if you go to a store and ask nicely, someone will tell you what you want to know.

Good luck!

I am looking for pewter bricks to melt down for a rtv rubber mold I made does anyone know where I can find a supply of them? I live in the Orlando FL area if that helps. also for future reference does anyone know of a good online guide for making rtv molds and castings?

One supplier I have used is micromark. I don’t know if they have the exact formulation you want but they do sell some casting metals including low-melt metals. I’m sure you know this but pewter is not for use in food service as it contains lead and acidic food will leach this lead and will cause lead poisoning.

I can’t find anything on the process of making the sculptures!

Anyone know?

lost wax casting, here a description of the process as used in ancient greece:

http://www.metmuseum.org/toah/hd/grbr/hd_grbr.htm

I’ve made several sand casted garden ornaments with concrete. The surface is relatively rough which is fine for some things. However, I want to create a smooth surface without using a mold (I want each object to be different).

I was hoping that someone who was an expert in concrete work could tell me if it were possible to sand cast objects, then remove them from the sand mold and create a smooth outer surface by using a slurry of cement and fortifier to create a layer over the top?

Would this work? What other products/techniques would yield the kind of result I’m looking for?

Have you considered thin one piece plaster waste molds. Solid clay sculpture coat in thin plaster shell remove the clay cast and remove plaster carefully.
Alternatively use a thin film barrier between sand and concrete plastic or paper etc.

Preferably something natural, no wicked chemicals this is a huge 1922 Wagner Ware heavy cast aluminum roasting pan.
PLEASE no smarty pants answers like this idiot Joseph Shmo

Fill it up with water and put it back on the stove…After boiling for a few minutes, the dried on food will start to release itself..

probably this link will help
www.metalliferous.com