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A self-replicating metal powder printer: http://reprap.org/wiki/MetalicaRap
Re: aluminum casting - 14 years ago
Much the same here BosenMike99, although looking at copper and nickel alloys rather than aluminum. I have found over the years that casting is underrepresented same as you have. But with 3D printing, I see a huge opportunity here.by downix - Casting and Moldmaking Working Group
Re: Vacuum Chamber - 14 years ago
No, casting is relatively simple. There are plenty of hobby casting sites out there. I would use glass or a polymer for the actual chamber, with a metal mold, otherwise you risk melting your mold with what you're casting. For metal casting most forges use sand mixed with a binding agent, like sodium silicate. Could also make a negative mold to then cast sand with. I'll work up a few scad models tby downix - MetalicaRap
Re: Vacuum Chamber - 14 years ago
Most obvious solution to me is to make it indirectly. Rather than print out the parts for it, print out segments for a mold, and cast it. Allows for larger pieces than can fit within the chambers.by downix - MetalicaRap
Re: Powderbed Machine - 14 years ago
johnrpm Wrote: ------------------------------------------------------- > have > you looked at > Well, that is the unit I was referring to, so yes. The mention of the recoater is above, but the file for making it is not on the wiki page.by downix - Powder Printing and Selective Laser Sintering
Re: Powderbed Machine - 14 years ago
I was just looking at this, having an idea for a powder printer when I noticed that there was no file for the recoater, but it was mentioned above. I was working with some sodium silicate for a mold, using blasts of CO2 to harden it, when a thought hit me that using sodium silicate as a liquid, applying it to the surface of a sand based powder and then hitting that with a tiny bit of CO2 to hardby downix - Powder Printing and Selective Laser Sintering