About Seoul Semi’s New “Sunlike” LEDs

Seoul Semiconductor has pre-released a series of LEDs it has claimed to produce near sun-like color and SPD at an impressive 97CRI. The marketing message is that this represents a breakthrough in delivering a more natural light to the eye, thus supporting improved health and well-being. Here is their claim, specifically: Continue reading “About Seoul Semi’s New “Sunlike” LEDs”

Taking a Break for some Gear-Heading at the Desk

When you spend a lot of time at the controls of word processors, spreadsheets, design software and 3D CAD, you may find that the pedestrian swill keyboards and mouse devices from the office supply and consumer electronics stores inadequate. I know I do. I used to go through a keyboard every year, and suffered from mouse fidelity issues (lack thereof). What I have found a superior approach is to using gaming interfaces. Gamers beat and pound away at their equipment, and subject them to real uses and abuses that office equipment is just not the equal of. Gamers also demand far more precision and consistent response. All good things for design uses. Continue reading “Taking a Break for some Gear-Heading at the Desk”

The Other Design Revolution in Making – 3D Printing Commercial vs. Affordable Performance Comparison

In 2010 we purchased our first 3D printer, a Dimension bst1200es from Stratasys. My intent from the off was to use it for making functional parts, over pure prototype uses. This meant that the traditional SLA process, which is very costly to own and operate, was not a consideration. I wanted parts made of a material that could stand being put into actual finished goods. This led to FDM (Fused Deposition Modeling). The material it prints is ABS plus, which is an excellent plastic for internal bits as well as structural components, within reason. I wrote a bit on this, with a video link during Week Thirteen of the 52 in 52 project that year. Since then, I have printed literally thousands of parts on this machine. I have guns fitted with stocks and stock parts made from the material, I have a motorcycle loaded with it in various uses, from fender supports to electrical housings. I’ve used it to make trade show light fixtures, sculptures, and holding fixtures for welding and vises on the CNC machining center (another 3D device). For more thoughts on 3D Printing, you can download a copy of  The Real 3D’s of 3D Printing, a presentation I gave on the topic to a 3D printing and maker group.

Recently, in the interest of lowering printed part cost and expand capacity, I added a second 3D printer. Continue reading “The Other Design Revolution in Making – 3D Printing Commercial vs. Affordable Performance Comparison”