- A 2015 “leaked” NASA Eagleworks paper on the EM-drive was circulated for review: https://drive.google.com/file/d/0B7kgKijo-p0ibm94VUY0TVktQlU/view.  
- Discussion of plasma-arc cutting confirmed that commercial torches (e.g., Multiplaz 3500) can slice concrete, ceramic tile, quartz glass and brick, not just metals, although cut quality and cooling requirements differ.  
- A microfluidic device for tobacco mesophyll protoplast fusion—modeled after a published protocol—was being rendered in ImplicitCAD; the job was so geometry-heavy that it demanded ≈256 GB RAM and days of Xeon time at 0.1 mm resolution, serving as a stress-test for the open-source ImplicitCAD engine.  
- Blender’s new official training series for 3-D printing workflows was shared: https://cloud.blender.org/p/3d-printing/.  
- Light-sheet microscopy construction was noted to require only a half-cylindrical lens plus a standard objective to convert a laser beam into a thin illumination plane.  
- Hydraulic-electrical circuit analogies and their limits were highlighted via the Wikipedia article https://en.wikipedia.org/wiki/Hydraulic_analogy#Limits_to_the_analogy.