Aerotech's ABRS series rotary air-bearing stages provide superior angular positioning, velocity stability and error motion performance in an exceptionally low-profile package. The stages have been optimized to minimize stage height and its low profile reduces the effective working height of the system while minimizing "stack-up" related errors. A clear aperture can be used for product feed-through, laser beam delivery, cable clearance or application-specific requirements. Large air-bearing surfaces provide high stiffness and load capacity, producing excellent axial and radial error motions, and tilt error motion as well. The resulting face error motion is a benefit for applications requiring exceptional planar performance.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.