Hackaday Podcast Ep 342: Poopless Prints, Radio in Your Fillings, and One Hyperspectral Pixel at a Time
Oct 17, 2025
Discover the fascinating world of multicolor 3D printing without the mess, thanks to a revolutionary hotend. Explore how a unique bellows hyperspectral camera captures images one pixel at a time. Delve into quirky anecdotes about dental work picking up radio signals, including a spy story featuring Lucille Ball. Learn how an air-powered robot could revolutionize soft robotics. Plus, find out if scrap radioisotopes can create X-ray-like images and uncover the secrets inside an old germanium transistor!
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Star Trek Keynote Panel And Live Stream
- The Supercon keynote is a multi-person Star Trek design panel featuring many longtime franchise designers.
- Hackaday will livestream the keynote for those who cannot attend in person.
Four-Color Mixing Hotend Enables Multicolor Faces
- Jan Rutz's four-color mixing hotend preserves separate filament streams to print multicolor faces without purging.
- The geometry yields laminar flow so different faces show distinct colors based on orientation.
Use Rotation And Slicer Mods For Color Control
- Combine rotating-bed or rotating-nozzle mechanisms to control which filament faces outward for printed multicolor facets.
- Use Nozzle Boss-style slicer adaptations and open-source designs to explore gradients and portraits.
