possible foundry technique?
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Topic: possible foundry technique?
Posted By: wraith14400
Subject: possible foundry technique?
Date Posted: 05 January 2005 at 4:19pm
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I've been thinkin' lately, and i need a project to do for my grade in metal shop. I've decided to make a gearshift, but the only way to do it is with a foundry (already gotten my work done in the machining and welding areas, otherwise i'd lathe it). I've gotten an idea on a technique to do it, but i thought i should run it by the forum first to be assured it'd work and not blow up in my face. I figure to make a wax model of my gearshift, and then make a plaster mould with it. after heating the wax and melting it out, i'd make the real deal out of aluminum. My question: would it work, or would the plaster shatter, or something else go horribly wrong and leave me scarred for the rest of my days? My other question: Is this the right place to post this? I didn't see a non-paintball tech section. ------------- Stock A-5 3a paintball 88/4500 HPA tank Soon to come: Full Freak E-grip vert reg |
Replies:
Posted By: Enos Shenk
Date Posted: 05 January 2005 at 4:22pm
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I have no idea, ive never tried to cast anything. Itd be cooler to cast some sort of clear plastic (dunno if acrylic melts), and put something inside it. But i guess that wouldnt really count for metal shop heh. ------------- 
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Posted By: holysmartone
Date Posted: 05 January 2005 at 4:32pm
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Im not really educated in mold making... But if you want to give it a try, go out and find yourself some high-temperature plastic and give it a try. As long as you dont dump the mold into icewater, theres no reason for it to explode in your face. Im a little curious how your going to melt the aluminimum and pour it and such. |
Posted By: merc
Date Posted: 05 January 2005 at 5:11pm
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you can melt alum in a kilm a buddy of mine told me they made cast alum stuff at his high school...
im thinking you would have to make a replaca of it with wax and then make a cast of that out of ceramic or something. then cast the alum... i say ceramic becase ive heard its able to hold liquid metal (and thurmite) 
edit: i miss read your post sounds good but i wouldent use plaster ask your teacher what to use. 2ndly plastic doesnt like to melt but it will burn nicly if you can do stuff with plastic i would recomend finding a 2 part compound to mix and pour ------------- saving the world, one warship at a time. |