# Summary of IRC Conversation on November 8, 2016

* A discussion about ImplicitCAD took place, where a developer mentioned rendering a complex microfluidic device model (tobacco mesophyll protoplast fusion device) that required approximately 256GB of RAM and had already consumed ten Xeon-2GHz-days of processing time over three days.

* Users discussed plasma cutting technology, specifically whether plasma torches could cut non-metallic materials like concrete, with one user sharing information about the Multiplaz 3500 which claims the unique ability to cut ceramic tiles, quartz glass, bricks, and concrete.

* A link to a purported EmDrive 2015 paper was shared (https://drive.google.com/file/d/0B7kgKijo-p0ibm94VUY0TVktQlU/view), though there was uncertainty about why it was being called a "leak."

* A user noted that generating a light sheet from a laser beam requires only a half-cylindrical lens and a normal objective, which they found interesting.

* A question was raised about 3D scanning/SLAM (Simultaneous Localization and Mapping) experts, with a suggestion that the #reprap channel (with 544 users) might be a good place to find such expertise.

* A link to a Wikipedia article on the hydraulic analogy and its limitations (https://en.wikipedia.org/wiki/Hydraulic_analogy#Limits_to_the_analogy) was shared, originating from a Hacker News discussion.