The goal of this project is to develop a laser head for 3D printing or PCB manufacturing which uses a rotating prism and is easy to assemble.
Cyanotype paper is currently used as it can be developed with water.


Specifications are determined by exposure onto a camera without lens and OpenCV. More technical details are available in the whitepaper or the business case pitch.



An image can be exported from Kicad to SVG and converted to instruction for the laserhead. An exposure result on a printed circuit board with close up is shown below.

Resolution below 100 microns can be achhieved. Stitching is between lanes is quite good on cyanotype paper but still a bit uneven on PCB. Exposure below is done without cylinder lenses.

An exposure goes as follows (for the result see above).

Special thanks go to Henner Zeller for his work on LDGraphy. The electronics and software in this project helped me a lot with constructing the laser scanner, see video.
The initial idea of using a prism for laser scanning originates from Dr. Jacobus Jamar. The first system used a plurality of laser bundles in a thicker prism under an angle.  TNO, a research institute of the Netherlands, still pursues this idea, in an entity known as Amsystems.
The current gateware relies on Amaranth HDL and some components from Luna. This is the work of white-quark and ktemkin.

Amaranth HDL gateware for Hexastorm
Optical design

PCB design

Hardware designs
CAD files

Literature Research
White paper @ Reprap

Other Links
Official website