Bent PETG Fills A Nixie Gap

Have you ever thought that Nixie tubes are cool but too hard to control with modern electronics? And that they’re just too expensive? [david.reid] apparently thought so and decided to create his own version of a Nixie tube, and it doesn’t get much cheaper than this.

PETG Nixie Tube

While working on a 3D printed locomotive with his son, [david.reid] used clear PETG (Polyethylene Terephthalate Glycol) 3D printer filament to move light from LEDs to various parts of the locomotive. He found this was a success, but roughed up the outside of the filament to see what would happen. Lo and behold, a warm glow appeared on the surface of the tube! Like any good hacker, his next thought was of Nixie tubes, as you have seen in many clocks.

His basic idea is that with a little heat you can bend the filament into any shape that you like ([david.reid] uses custom molds). You then use some sandpaper to roughen up the outside wherever you’d like light to show, and add an LED at the bottom to light it up!

[david.reid] isn’t the first person to modernize Nixie Tubes. Over the years, we’ve seen them combined with Wi-Fi boards, individual LED segments, or even laser cutters & WS2812s!

Now’s a great time to get started on a project for the Hackaday Prize! If you’re looking for somewhere to start, we’d love to at least see your own take on a clock!

Plexitube Owl Clock Watches You Sleep

Wait, plexitube? Is that a typo? Surely we mean Nixie tubes!

For a Christmas project [Kurt] wanted to build some owl-inspired clocks — with bit of a retro feel. Given the complexities of finding and using actual Nixie tubes, he went with an alternative — a Plexitube.

Closeup of Plexitube

Plexitubes look like futuristic Nixie tubes. They can have different stylized numbers. They’re crisp, they’re bright, and they are completely customizable. They’re made of edgelit acrylic! By laser etching the design onto pieces of acrylic and feeding LED light into the edge, very much like how a light-pipe works, it’s possible to have a neon-light effect — using nothing more than plastic and some LEDs.

He designed custom PCBs for the project, with SMD LEDs for the plexitubes. Making use of a laser cutter, he designed the actual owl to be made out of lightly formed wood cutouts — the entire thing looks absolutely fantastic.

As far as “Nixie tube” clocks this has gotta be one of the most aesthetically pleasing ones we’ve seen in a while, but if you’re looking for an all-out-Nixietube-extravaganza… take a look at this whopping thirteen tube clock.

[Thanks for the tip Lawrence!]