The new design on the DB series has more efficient PSA technology and many other new features, offering low-maintenance paybacks of less than two years. Their new design also allows extra PSA towers to be added onto the main unit. The generators all come with prefilters, membrane filter and a built-in oxygen monitor. They are made out of corrosion-resistant materials with an anodized aluminum frame, and offer flow rates from 43 scfh up to 2250 scfh with nitrogen gas purities from 95-99.99 percent.
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.