Category Archives: mask

3D-Printed COVID Stuff That’s Not Face Shields or Ventilators

The coolest stories from the hacker community this year are the rapid manufacturing efforts that have gone on in response to COVID-19. But [Mark Rehorst], frequently featured on these pages for his clever takes on 3D printing, shared a couple of really useful prints that are out of the ordinary …read more

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Posted in 3d Printer hacks, bias tape, Covid-19, earsaver, functional 3d printing, mask | Leave a comment

Hackaday Links: March 22, 2020

Within the span of just two months, our world of unimaginable plenty and ready access to goods manufactured across the globe has been transformed into one where the bare essentials of life are hard to find at any price. The people on the frontline of the battle against COVID-19 are …read more

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Posted in amateur radio, camera, cons, Covid-19, face mask, Hackaday Columns, Hackaday links, ham radio, lens, license, mask, n95, O-ring, OSHW Summit 2020, PPE, VE testing, waterproof | Leave a comment

These Bit Twiddling Tricks Will Make Your Coworkers Hate You

In the embedded world, twiddling a few bits is expected behavior. Firmware is far enough down the stack that the author may care about the number of bits and bytes used, or needs to work with registers directly to make the machine dance. Usually these operations are confined to the …read more

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Posted in bit manipulation, bit math, bit twiddling, bits, classic hacks, mask, registers, shift, software hacks | Leave a comment

CNC Machine Most Satisfyingly Mills Double-Sided PCBs

We know that by this point in the development of CNC technology, nothing should amaze us. We’ve seen CNC machines perform feats of precision that shouldn’t be possible, whether it be milling a complex jet engine turbine blade or just squirting out hot plastic. But you’ve just got to watch this PCB milling CNC machine go through its paces!

The machine is from an outfit called WEGSTR, based in the Czech Republic. While it appears to be optimized for PCB milling and drilling, the company also shows it milling metals, wood, plastic, and even glass. The first video below shows …read more

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Posted in cnc, cnc hacks, double sided, fr4, mask, pcb, resist, tool hacks, via | Leave a comment

Three Ways to Etch Snazzy Brass Nameplates

It’s the little touches that make a project, and a nice nameplate can really tie a retro build together. Such badges are easy enough to make with a CNC machine, but if you don’t have access to machine tools you can put chemistry to work for you with these acid-etched brass nameplates.

The etching method that [Switch and Lever] uses to get down to brass plaques will be intimately familiar to anyone who has etched a PCB before. Ferric chloride works as well on brass as it does on copper, and [Switch and Lever] does a good job explaining the …read more

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Posted in laser, mask, nameplate, paint, plaque | Leave a comment