Aug.3, 2012
The University of Twente, the Netherlands brought their Pwdr Model 0.1 to the open source community, an open source powder-based rapid prototyping machine.
Its goal is to promote experiments and innovations in powder-based rapid-prototyping. The machine is ready to use both the 3DP as the SLS process with minimal adaption, although the printer is currently prepped for 3DP.
A wide range of new materials become available for experimenting with open-source rapid-prototyping; for example, when using the 3DP process: gypsum, ceramics, concrete, sugar, etc. And when the SLS process is fully supported, plastic materials like ABS, PP, Nylon and metals become available as building material.
Specifications
- Maximum build size: 125mm x 125mm x 125mm
- Print resolution (3DP): 96DPI
- Minimum vertical step size: 50μm
- Speed (depending on printed part): ±1 minute per layer
Hardware
The Pwdr Model 0.1 consists of chassis, tool head and electronics. The printer consists of two bins (#1 for storing powder, near electronics and #2 for building the part), which move up and down respectfully during the printing process. The powder is distributed using a counter-rotating roller.
The printer head that deposits the binder is a standard Hewlett Packard C6602A cartridge. The cartridge can be refilled with custom binders using a syringe. A custom binder of 20% alcohol and 80% water has been proven to work. The printer head is connected to the Arduino micro-controller via a custom protoshield board that supplies the correct voltages to the nozzles.
It has a simple design and can be built within a couple of hours. The machine is easy and affordable to build and modify. Building a Pwdr Model 0.1 machine costs about €1000,-.
Software
Two pieces of software are used for the printer control; the firmware running on the Arduino micro-controller and control software running on a computer. The control software converts the CAD model in a printable format, this file is then uploaded to the Pwdr Model 0.1 micro-controller.
This technology will certainly make a change and bring new opportunities to rapid prototyping in the open source community.
Thanks antonio for the tip!
Posted in 3D Printers
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And I thought the Candyfab (http://en.wikipedia.org/wiki/CandyFab) back in 2009 was the first open source powder based 3D printer.
Michael Tig wrote at 8/5/2012 5:56:54 PM:
wow..
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