Additive manufacturing, aka 3D printing, is able to produce wonderful and amazing objects in relatively short periods of time. Items are now being created in hours, not days, which is an extraordinary leap in technology. However, waiting for a 3D printer to complete its cycle is still a lot like watching paint dry. It takes way too long, and occasionally, time is of the essence when prototyping products for a client. Sometimes you just need it done now,…not a few hours from now.
[0n37w0] is hoping solve this problem by working on a way to ‘print’ 3D objects using arcs of electricity. We are still trying to wrap our heads around how this will work, but from the looks of it, arc printing “is done by completing an electrical current on an area of granulated metal thus heating the metal enough to form a bond to the structure being printed.”
The printer is comprised of four main components (the print bed, the lifting device, the control box, and the granulated metal supply bin). The supply bin feeds granulated metal, possibly by vibration, onto the print bed. A lifting mechanism is then lowered within electrical contact and the printing begins. After each layer, the object is raised.
To find out more, check out the Hackaday.io project page.
2 thoughts on “An Electric Arc Printer For Rapid 3D Prototyping”
Metal spraying is a process that was used to build up crankshafts so they could be machined back to spec. Used an arc and metal wire.
Sounds like EBM: http://en.wikipedia.org/wiki/Electron_beam_melting but without the vacuum. And I’m not sure I get this XY electrode array thing. Good thinking though. We need alternatives to melty plastic.
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