# Summary of IRC Log Discussion

• Participants discussed the design of a spiral generator algorithm, with a focus on properly orienting "dominoes" or cross-sections along a spiral path by using the tangent at each point to determine the correct rotation angle.

• A RepRap 3D printer was mentioned as being in the print queue, with discussion about where it could be stored and used, including challenges of using it in a dorm room due to fire codes and the smell of molten plastic.

• Several 3D printing services were referenced for obtaining RepRap parts, including Ponoko, eMachineShops, and Shapeways, with Ponoko noted as having the necessary files already uploaded.

• The group discussed using SolidWorks for spiral modeling, including its CSV format capabilities and the "offset" command for creating spiral designs with proper endpoints.

• Members shared links to robotics resources, including OROCOS (Open Robot Control Software) and University of Texas robotics lab facilities and courses (http://www.orocos.org/ and http://www.robotics.utexas.edu/).

• The conversation touched on the potential application of spiral designs for filtration systems, with references to scientific papers on the topic and consideration of alternative approaches like spinning filters or centrifuges.