Laser Cut Mitre Joints

Connecting planes with angled precision

Running interesting laser cutter experiments is one of the things that Just Add Sharks does best. In this exploration, they have addressed the question of how to break away from the mortice and tenon joints that have become so familiar in laser cut projects.

By creating a laser cut jig that holds the material at a specific angle, they were able to cut edges that can fit together in a manner that is clean and precise. No more stepped blocks and slots! Here is what the jig looks like:

Much easier to achieve than modifying the axis of the laser cutter itself, this jig provides a firm support to a pre-cut panel, and does not require any other machine modifications. The angle of the cut can be controlled by altering the vertical supports.

“Manually changing the angles like this is tiresome so the next sensible upgrade would be to build an ‘any angle, any material thickness’ jig for the same purpose, but that is a job for another day.”

The Just Add Sharks blog has an overview by Martin Raynsford that talks through a few of the considerations that led to the first successful cut. Having proven that it can be done with standard perpendicular joints, they adjusted a few specs on the jig to produce a icosahedron, pictured below.

via Just Add Sharks

123D Make partners with Cricut

Giving 3D form to desktop cutting projects. Next stop, to the laser cutter!

Already well established as the gold standard for bringing super-simple 3D construction to the DIY masses, Autodesk 123D has announced an exciting partnership that goes one step further. They’ve teamed up with Cricut, the guys responsible for desktop electronic cutting machines that induce equal measures of desire and envy amongst Makers and Crafters.

The collaboration features a new series of easy-to-assemble 3D DIY projects including dinosaurs, rocket ships, creatures and homewares that are all geared towards owners of the Cricut machines.

Now, while this is a clearly targeted partnership that brings the clever slicing technology of 123D Make to users in the Cricut community, it is also a welcome reminder of the resources that are readily available and can be easily incorporated into your laser cutting workflow.   (more…)

Turn your 3D printer into a laser cutter

L-CHEAPO conversion kit brings laser cutting to the masses

Imagine turning a desktop 3D printer into a laser cutter without compromising its printing capabilities. That’s what Matteo Borri from Robots Everywhere has done, and the L-CHEAPO laser cutter attachment is now the focus of a wildly successful Indiegogo campaign.

Capable of cutting 3/16″ wood and 1/4″ acrylic on any hobby grade 3D printer or CNC mill, this clever little attachment runs off the existing machine’s power supply and software environment. Once the attachment is set up and configured, in a matter of minutes you can swap back and forth from laser cutter to 3D printer functionality.

“you can switch from laser to printer mode and vice versa in less than two minutes, with no tools”

Why would you want to do this? For one thing, laser cut parts tend to be much tougher than the thermoplastics used in 3D printers. This means the scope of making possibilities is significantly widened, all from the one machine.

Matteo is looking out for the little guys with this project, with the goal of making laser cutting accessible to those who might otherwise be hindered by the substantial initial investment that is traditionally associated with purchasing a laser cutter.

“I hope that this allows high school shop classes, small universities and local hackerspaces to be able to work with a wider variety of materials and techniques”

He also promises that there are larger, more powerful lasers in the works. It will be interesting to see what the big brother to L-CHEAPO is capable of.

The 3D printed component is available to download from Thingiverse and you can head to Indiegogo for further info and project updates.

Here’s a little extra, just for fun. Proving that he is serious about his DIY laser cutting prowess, Matteo uploaded this geekily amusing clip of the Tetris theme song, as played by an L-CHEAPO laser cutter in action.

via Hackaday

StippleGen experiments on a DIY laser cutter

Going dotty over laser cutting

When Jens Clarholm built his impressive DIY laser cutter, he was well aware of the limitations imposed by the low powered laser. While it may not cut through wood or steel, it does do a very neat job of cutting paper.

One great way he has explored this is by having a play with StippleGen2, a nifty program from Evil Mad Scientists. The program uses a special algorithm to convert an image into tiny dots. There are a number of ways to manipulate how it does this, as the calculations are repeated over and over again and the final graphic is refined. StippleGen2 is easy to use and a lot of fun.

For this experiment, Jens chose an iconic image of Louis Armstrong playing the trumpet.

After letting StippleGen2 crunch the numbers for a while I imported the resulting vector graphic file into inkscape and generated the G-code so that I could use my laser cutter to cut the image into black paper.

The cutting process took a little over 2 hours, which isn’t too bad when you consider that there are over 1000 holes in this particular image.

There is a lot more that StippleGen2 can do, so if you are intrigued by Jens’ experiment you can have a go with StippleGen2 yourself or learn more about Jens’ DIY laser cutter here.

via JensLabs

Open Source Laser Cut CT Scanner

Taking a DIY approach to high tech imaging

Providing the magical ability to scan not only the surface, but also to reveal details of the insides of an object, the CT (computed tomography) scanner has quite literally changed the way we see ourselves.

Modern CT scanners are frightfully expensive and are usually found in hospitals but Canadian-born Peter Jansen has built one himself out of laser cut wood.

“After seeing the cost for my CT scan, I decided it was time to try to build an open source desktop CT scanner for small objects, and to do it for much less than the cost of a single scan.”

With a design quite similar to the early commercial CT scanners, Peter’s device began as a quarter-scale laser cut acrylic version that he whipped up in a single day.

He then used this mockup to help refine the design, under the watchful gaze of a friendly house cat. (more…)

Etch A Sketch controls on a laser cutter?

Arduino-based modification turns laser cutting into a hands-on affair

Just in time for International Arduino Day, this fun project from Just Add Sharks really has our fingers twitching.

Imagine controlling a serious laser cutter with the dynamic ease of an Etch A Sketch. Having first toyed with the idea years ago, Just Add Sharks have finally followed through and attached a fully functional Etch A Sketch controller to their laser cutter. Talk about dreams coming true!

Complete with authentic twiddly knobs and retro-Etch styling (all laser cut, of course) the modification uses an Arduino Pro Mini to bypass the machine’s existing wiring.

Click through for a video of the controller in action, where you can see the different functionality of either Etch or Cut being demonstrated.


Original ideas to laser cut (not really)

The Laser Cutter Roundup — a weekly dose of laser-cut love: #167

Hey, Sam here collecting the post from The Laser Cutter.

Make sure you join TLC’s Facebook page.

Above is a laser cut covered notebook from Creative Use of Technology.

After the jump, scarf buckles, dinosaurs, lips,  love, and a laser cutter… (more…)

MicroSlice laser cutter now on Kickstarter

mini Arduino laser cutter & engraver kits

There was plenty of excited chatter when Greg Holloway posted his MicroSlice laser cutter on Instructables last year. Much of this involved people asking “where, when and how can I get one?” Well, the good news is that this diminutive digital manufacturing device is now the subject of a Kickstarter campaign, and the pledges are coming in fast.

The MicroSlice is a nifty little unit. Once you take a closer look, it is easy to see why it won the 2013 Instructables Radioshack Microcontroller Contest. Imagine a laser cutter that sits on your desktop. Not impressed? Consider that it sits on your desktop, and takes up less space than a bowl of cereal. Less space than a takeout container. Less space than a burger with the lot. In fact it takes up less space than the power supply from a regular sized laser cutter.

The MicroSlice is a Build-It-Yourself kit, uses Open Source Software, and can be easily assembled at home by just about anyone.

The MicroSlice can cut paper, and engrave wood & plastic. Kits include an Arduino UNO R3 as well as 97 laser-cut parts and all necessary hardware to get up and running. The laser diode is a 100mw red laser, similar to what you’d find inside a DVD-RW drive. An option is available to supercharge the MicroSlice with a 200mw laser.

With a truly miniature work area of 50mm x 50mm (2″ x 2″) users will be choosing their projects carefully.  For bigger projects, there is always Ponoko.

Learn more, watch videos of the MicroSlice in action, and make a pledge over at Kickstarter.

MicroSlice on Kickstarter

DIY Laser Cutter

Discover what a home-built laser cutter can do

There are a few examples out there of DIY laser cutters, with people sharing info and tips on how to make your own laser cutting device at home.

One such project comes from Jens Clarholm, and he has put together a neat overview of just what his home-built device is able to achieve as it cuts and/or engraves various readily available materials.

The laser cutter that Jens constructed boasts a 300mW laser diode sourced off eBay mounted in a wooden frame with drawer runners facilitating movement on both axes. Controlling the mechanism is a breeze thanks to an Arduino Nano and Easy Driver combo.  (more…)

The Chart of Hand Tools

Over 300 illustrated tools of the trade

We may be immersed in the digital workflow of laser cutters and 3D printers, but there are still dozens of hand tools that makers are using every day.

The experts of laying it all out, Pop Chart Lab, have put together a wonderful collection in their print The Chart of Hand Tools.

“Meticulously illustrated tools celebrating the tinkerers and the doers: those who build, repair and create.”

Whether it’s the finely tuned measuring devices that ensure every dimension is just so, or the brute force of over 20 different hammers and mallets, somewhere on this illustrated panel will be the tools that enable you to realise your creativity.

Click through for a detailed view. (more…)