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Can't recommend it enough. PLEASE use this for your media:

OpenCAx project ideas for the 2019 Google Summer of Code. FreeCAD, BRL-CAD, OpenSCAD, Slic3r and LibreCAD are all involved.

This container is for use in working with a terrific new material that I am investigating: a mixture of chopped glass, sodium silicate, and water (more on this in a later post). This mix tends to get lumpy when mixed. I like to press out the lumps to create a more homogeneous mixture. This strong, flat-bottomed container will work well for that.

I created the flat-bottomed, straight-walled container from stainless steel. I used a carbide-infused fiberglass cutting disk mounted to a Dremel for both tasks.

All-State 11 FC Nickel-Silver coated brazing rods seemed like just the ticket, but it didn't work. Finally, I called the local Air Gas (where I get my gas cylinders) who sold me Radnor Safety-Silv 56 coated brazing rods. 😀 I used a natural gas-oxygen torch.

@jmwright Hi Jeremy: Not everyone can be an expert in all things (I suck at plumbing and roofing). With my BSEE degree as background, I refer you to this image:

In both circuits, one LED is being driven from 12V. The reason for the resistor in series is because the voltage drop of single LEDs is the same as it is for all diodes: .6 - .7V. Without the resistor, the LED would be over-driven. The resistor could be eliminated if 20 (12/.6) LEDs were being driven.

With 150V, many LEDs are used.

⚠️ Heads-up: the #EU is considering ways to regulate software that runs on radio-enabled devices due concerns about interferences.
Some of their solutions could significantly harm #postmarketOS, but also related project such as #UBports, #LineageOS and #Replicant (among others).

The initiative is now seeking feedback, don't hesitate to send them yours! It seems that Non-eu citizens can contribute as well. There's not much time left, so act quickly!

Commercial HEPA flow hoods are expensive. I made a small HEPA filter from a catch basin (Lowes Item # 118877), a vacuum bag, wood, adhesive, and a squirrel cage blower.

I used the wood to mount the filter fabric.. The installed finished assembly works great. By that, I mean that the air flow is what I wanted: not too much or too little.

Here's one for @ajroach42 as well as #retrocomputing and #commodore fans

This is the #odroid-go with keyboard attachment running a c64 emulator and loading Infocom's "Planetfall" from d64 images on the microsd card.

Pocket C64 anyone?

We are really excited to be introducing our new community forums! With the introduction of our Flarum-based community forums, we will have a new centerpiece to community engagement that provides us with the user experience and flexibility we've long desired. Read more at

Kurt Kremitzki is working to organize a GSoC project for FreeCAD, and is looking for a student to get involved. Details in the Patreon update I posted earlier, and his contact info is below.

Twitter: @thekurtwk

Kurt Kremitzki Patreon update about the work he's doing on open engineering in Debian and Ubuntu.

Taking my favorite game on Android, untangle, and seeing how it runs on the #Librem5. Looks like I might need to change how the click/touch and drag works... I'm glad @Purism fixed the LCD panel driver. Thanks!

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Makerdon is a Mastodon instance focused on Makers, Open Source Hardware (OSHW) and STEM/STEAM. Free and Open Source Software (FOSS) is a likely topic as well. If you're interested in making things, allowing others to build on your work, and/or teaching others about making things, you might like this instance.