A 2D Image Makes A 3D Print

When you imagine 3D printed art, it’s easy to envision the different kinds of sculptures and figurines posted online. While these projects take plenty of time and creativity on their own, [César Galera] shows us a different way to make 3D printed art by turning 2D images into fully textured 3D prints.

This project follows a similar technique that stems from lithophanes, which produces an image from light that passes through the object. [César] instead details in the video below the break how to use the ItsLitho tool to build completely opaque black and white images using a multicolored printer.

Lithophanes are built (or printed) by mapping topography to make light easier or harder to pass through in certain places. Areas that appear darker are thicker with more layers, and areas that appear lighter have less. It’s a nifty optical illusion, but these kinds of art blocks aren’t actually multicolored themselves.

The trick is to develop the 3D model using the lithophane tool first to create the different elevations (ensuring that the lowest elevation is still thick enough to be opaque), but retain the different colors on the model when it’s exported. Multi-colored 3D printers will then be able to add gray and black filament as it prints higher and higher elevation. If you don’t have a multi-colored printer, you can add pauses on the 3D print file to switch out filaments after a few layers to achieve a similar effect.

We’re always on the lookout to see the different things we can print, and being able to turn digital artwork into a 3D model is a great example!

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Hackaday Links: November 20, 2016

The Raspberry Pi 2 is getting an upgrade. No, this news isn’t as big as you would imagine. The Raspberry Pi 2 is powered by the BCM2836 SoC, an ARM Cortex-A7 that has served us well over the years. The ‘2836 is going out of production, and now the Raspberry Pi foundation is making the Pi 2 with the chip found in the Raspberry Pi 3, the BCM2837. Effectively, the Pi 2 is now a wireless-less (?) version of the Pi 3. It still costs $35, the same as the Pi 3, making it a rather dumb purchase for the home hacker. There are a lot of Pi 2s in industry, though, and they don’t need WiFi and Bluetooth throwing a wrench in the works.

So you’re using a Raspberry Pi as a media server, but you have far too many videos for a measly SD card. What’s the solution? A real server, first off, but there is another option. WDLabs released their third iteration of the PiDrive this week. It’s a (spinning) hard disk, SD card for the software, and a USB Y-cable for powering the whole thing. Also offered is a USB thumb drive providing 64 GB of storage, shipped with an SD card with the relevant software.

Mr. Trash Wheel is the greatest Baltimore resident since Edgar Allan Poe, John Waters, and Frank Zappa. Mr. Trash Wheel eats trash, ducks, kegs, and has kept Inner Harbor relatively free of gonoherpasyphilaids for the past few years. Now there’s a new trash wheel. Professor Trash Wheel will be unveiled on December 4th.

YOU MUST VOICE CONTROL ADDITIONAL PYLONS. With an ‘official’ StarCraft Protoss pylon and a Geeetech voice recognition module, [Scott] built a voice controlled lamp.

Everyone loves gigantic Nixie tubes, so here’s a Kickstarter for a gigantic Nixie clock. There are no rewards for just the tube, but here’s a manufacturer of 125mm tall Nixies.

Here’s an interesting think piece from AdvancedManufacturing.org. The STL file format is ancient and holding us all back. This much we have known since the first Makerbot, and it doesn’t help that Thingiverse is still a thing, and people don’t upload their source files. What’s the solution? 3MF and AMF file formats, apparently. OpenSCAD was not mentioned in this think piece.