3d Printer hacks

2543 Articles

Simple 3D Printed Seven-Segment Displays

February 2, 2021 by 7 Comments

7-segment LED displays were revolutionary, finally providing a clear, readable and low-power numerical display solution. We’ve got plenty of other cheap display options now, but sometimes you just need the old nought-through-nine, and in a big, visible package, to boot. For those circumstances, consider whipping up a set of these 3D-printed seven-segment displays.

The build consists of a 3D printed frame, with each segment containing two WS2812B addressable LEDs. Each 7-segment assembly is then wired so they can be daisy chained, passing on data to the next digit in the chain. Paper is used to diffuse the LEDs for a smoother look, and a white 3D printed cover is printed for each digit to further spread the light and give a clean finish.

Being based on the WS2812Bs, it’s easy to drive such displays with just about any microcontroller or GPIO-equipped Linux board out there. We love big, beautiful displays – and the more artistic, the better. Video after the break.

Continue reading “Simple 3D Printed Seven-Segment Displays” →

Art of 3D printer in the middle of printing a Hackaday Jolly Wrencher logo

3D Printering: Why Aren’t Enclosures Easier?

February 2, 2021 by 101 Comments

For 3D printers that aren’t already enclosed, why is easily adding a cheap and effective enclosure still not a completely solved problem? The reason is simple: unless one’s needs are very basic, enclosures are more than just boxes.

Different people need different features, printers come in different shapes and sizes, and creating something that can be both manufactured and shipped cheaply is a challenge in itself. In this article I’ll explain how those things make boxing up your printer a tougher nut to crack then may seem at first glance.

Enclosures Have Different Jobs

People have different expectations of what an enclosure’s job should be, and that determines which features are important to them and which are not. Here is a list of meaningful features for 3D printer enclosures; not everything on this list is important to everyone, but everything on this list is important to someone. Continue reading “3D Printering: Why Aren’t Enclosures Easier?” →

3D Printing An Ion Propulsion System

January 27, 2021 by 20 Comments

As much as we love Star Trek, we have to admit there are some continuity problems. For example, in Spock’s Brain, the alien-of-the-week’s ion drive gave Scotty engineering envy. However, in The Menagerie, the computer identifies a Starfleet shuttlecraft as having ion propulsion. Either way, ion propulsion is real and NASA has toyed with it for ages and many satellites use it for maintaining orbit. Now researchers from MIT and the Monterrey Institute of Technology and Higher Studies 3D printed tiny ion engines.

The engine is about the size of a dime and, like all ion engines, produces tiny amounts of thrust. In fact, the researchers liken it to half the weight of one sesame seed from a hamburger bun. However, in space, these tiny thrusts add up and over time can produce significant acceleration.

Continue reading “3D Printing An Ion Propulsion System” →

3D Printed Box Gets Bigger

January 26, 2021 by 10 Comments

If you ever watched Dr. Who, you probably know that the TARDIS looked like a police call box on the outside, but was very large on the inside. When asked, the Doctor had some explanation of how something can look small when it is far away and large when it is close up, which never made much sense. However, [iQLess] has been 3D printing boxes in a small area, that fold out to be much larger boxes. (Video, embedded below.) The design comes from someone called [Cisco] who has a lot of interesting print in place designs.

You can find the design on the Prusa site or Thingiverse. The boxes do take a while to print, according to the video below. What was interesting to us, though, is that you should be able to print a design like this to create a box larger than your printer.

Continue reading “3D Printed Box Gets Bigger” →

OpenSCAD Prints Woodworking Aid

January 23, 2021 by 24 Comments

Home-based 3D printing is getting pretty unremarkable. Sure, printers aren’t as ubiquitous as, say, PCs. But you wouldn’t be any more surprised if your neighbor had a 3D printer than if you found out they had a drill press. In fact, sometimes the real value of 3D printing something isn’t to make a working part, but to make up something that helps you create other things using methods other than printing. That’s exactly what [iqless] does when he uses his printer to make some jigs to help him easily build shelves. (Video, embedded below.)

The issue is making dowel joints for the shelve’s feet. Sure, you could just drill a piece of scrap wood as a template, but with a 3D printer you can do better. Using OpenSCAD, it is possible to create a parameterized jig that fits exactly the job at hand.

Continue reading “OpenSCAD Prints Woodworking Aid” →

Low Cost Metal 3D Printing By Electrochemistry

January 23, 2021 by 80 Comments

[Billy Wu] has been writing for a few years about electrochemical 3D printing systems that can handle metal. He’s recently produced a video that you can see below about the process. Usually, printing in metal means having a high-powered laser and great expense. [Wu’s] technique is an extension of electroplating.

Boiling down the gist of the process, the print head is a syringe full of electroplating solution. Instead of plating a large object, you essentially electroplate on tiny areas. The process is relatively slow and if you speed it up too much, the result will have undesirable properties. But there are some mind-bending options here. By using print heads with different electrolytes, you can print using different metals. For example, the video shows structures made of both copper and nickel. You can also reverse the current and remove metal instead of depositing it.

This looks like something you could pretty readily replicate in a garage. Electroplating is well-understood and the 3D motion parts could be a hacked 3D printer. Sure, the result is slow but, after all, slow is a relative term. You might not mind taking a few days to print a metal object compared to the cost and trouble of creating it in other ways. Of course, since this is copper, we also have visions of printing circuit board traces on a substrate. We imagine you’d have to coat the board with something to make it conductive and then remove that after all the copper was in place. When you build this, be sure to tell us about it.

We’ve seen electroplating pens before and that’s really similar to this idea. Of course, you can also make your 3D prints conductive and plate them which is probably faster but isn’t really fully metal.

Continue reading “Low Cost Metal 3D Printing By Electrochemistry” →

The US Air Force Wants Your 3D Scanner Ideas

January 21, 2021 by 41 Comments

One key piece of technology from Star Trek is the replicator, a machine that 3D prints up almost anything using some hazily-defined high technology. You have to wonder though, how did the patterns for Earl Grey tea or a spare part for a shuttlecraft intercooler come to exist in the first place. Maybe someone designed them, or perhaps they scanned the real articles. The US Air Force is betting on the latter, and they’ve asked for white papers and proposals for innovative methods to scan objects for 3D printing.

It isn’t surprising military planners would like to have effective 3D printing. After all, you can’t carry every spare part you might need into a theater of operation. Not to mention spares for your friends in joint operations or for enemy gear you might happen to capture. Having a truck that could turn out whatever your troops need is an attractive proposition. Continue reading “The US Air Force Wants Your 3D Scanner Ideas” →