Metal Casting

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Kulturfolger
Posts: 50
Joined: Thu Jul 30, 2015 8:56 pm

Re: Metal Casting

Post by Kulturfolger » Sat Aug 08, 2015 3:36 pm

Just print right away and mix half playground sand (right term I hope) and the other half plaster of paris. Mix it with water and remove all the bubbles. Then you submerge the print with this mix and let it rest a couple of hours.
Use a fornance to burn away the plastic at 650°C/1200F and clean the mould with compressed air. You got your fire-proof mould and the PLA is completly gone.
Metal is melted in a crucible in a furnace, then poured carefully into the mould. The shell is placed into a sandbed for isolation.

Sounds easy but it takes many hours of testing and rethinking. Lots of failures.
Feel free to correct my mistakes. English is not my native language.

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Mark the Greater
Posts: 124
Joined: Mon Jul 27, 2015 8:27 pm
Location: Brookfield, IL

Re: Metal Casting

Post by Mark the Greater » Mon Aug 10, 2015 3:19 pm

I plan to order this guy tomorrow: http://www.gesswein.com/p-10845-paragon ... =&perpage=.

I'll let you folks know what happens when I give it a try...
Love Always,
MtG

Alloy
Posts: 45
Joined: Wed Jul 29, 2015 4:59 pm

Re: Metal Casting

Post by Alloy » Mon Aug 10, 2015 5:32 pm

Or you could just print the whole mold out of sand :lol:
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Mark the Greater
Posts: 124
Joined: Mon Jul 27, 2015 8:27 pm
Location: Brookfield, IL

Re: Metal Casting

Post by Mark the Greater » Mon Aug 10, 2015 6:55 pm

I always forget the password to my ExOne though...
Love Always,
MtG

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