MicronAir combi-filters protect against solid particles, gaseous pollutants, and odors. Based on particle filters, the MicronAir incorporates a media combination of activated-carbon granules and nonwoven material. Brochure explains the effect of pollutants and explains product solutions. Diagrams and photographs are also included.
Freudenberg Nonwovens, Air Filtration Div., 2975 Pembroke Rd., Hopkinsville, KY 42240, FAX (502) 886-5069.
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.