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Mark Miller developed second version of his arc welder based metal 3d printer - here is the Chipfuzer V2.0.




Mark wrote:

Chipfuzer 3 D metal printer (version 2.0). This is the second prototype I made to improve the original design. It is smaller-12 inches wide, 12 inches deep and 12 3/4 inches tall. This model is fully enclosed and has safety features to keep the user safe from high voltage and harsh arc light produced on the build table.

The design also fully eliminates RFI produced by the arc process and makes a neat, tidy compact unit that can be easily transported and used anywhere.
The multicolored enclosure components are due to just having a little bit of each color paint in several cans on the shelf (low funds) and not representative of anything, or me trying to be overly "artsy".
I scaled down the X,Y and Z slide mechanisms but kept the build table the same as the first model, and the build size is nearly the same as the original. I am still tinkering with it a bit, but satisfied thus far with the new design.

This machine went together better and faster than the original, despite having to scavenger hunt parts, and make due with similar materials. In some places the unit is triple insulated, and the interior is covered in conductive coating and grounded. I think one more design and build will probably get me to a really good design for this idea, and will concentrate more on the software end of things from now on. Thus far I have made about a dozen prints with this, but plan on using this machine for most future experimenting.

First post about Chipfuzer:

http://diy3dprinting.blogspot.com/2013/11/chipfuzer-diy-3d-metal-printer-by-mark.html

Chipfuzer V 2.0 - you can see the print chamber and arc welder tips

This is important step forward for the entire field: open source sub 1500 USD metal printer. It can be mad by anyone with some experience. It is based on static MIG welder and moving invert delta 3d printer platform as build bed.

Project was developed by Michigan Tech's Open Sustainability Technology Lab: Gerald C. Anzalone, Chenlong Zhang, Bas Wijnen, Paul G. Sanders and Joshua M. Pearce. Kudos to you gentlemen!


From project abstract:

Technical progress in the open-source self replicating rapid prototyper (RepRap) community has enabled a distributed form of additive manufacturing to expand rapidly using polymer-based materials. However, the lack of an open-source metal alternative and the high capital costs and slow throughput of proprietary commercialized metal 3-D printers has severely restricted their deployment. The applications of commercialized metal 3-D printers are limited to only rapid prototyping and expensive finished products. This severely restricts the access of the technology for small and medium enterprises, the developing world and for use in laboratories. This paper reports on the development of a <$2000 open-source metal 3-D printer. The metal 3-D printer is controlled with an open-source micro-controller and is a combination of a low-cost commercial gas-metal arc welder and a derivative of the Rostock, a deltabot RepRap. The bill of materials, electrical and mechanical design schematics, and basic construction and operating procedures are provided. A preliminary technical analysis of the properties of the 3-D printer and the resultant steel products are performed. The results of printing customized functional metal parts are discussed and conclusions are drawn about the potential for the technology and the future work necessary for the mass distribution of this technology.

Project homepage with detailed build instructions:

http://www.appropedia.org/Open-source_metal_3-D_printer

Academia paper on this printer:

https://www.academia.edu/5327317/A_Low-Cost_Open-Source_Metal_3-D_Printer

If you want to learn more about MIG (metal inert gas) welding:

http://en.wikipedia.org/wiki/Gas_metal_arc_welding

















































There is another welder based DIY metal 3d printer project with almost no documentation - The Chipfuzer:

http://diy3dprinting.blogspot.com/2013/11/chipfuzer-diy-3d-metal-printer-by-mark.html