Arduino-driven clock that writes the time, erases and repeats
Self-declared “Geek Mom” Debra posts some pretty amazing DIY projects on her blog, and this version she made of the PlotClock is well worth a closer look.
As you can see in the video above, the PlotClock is a timekeeping device that diligently wipes away the previous figures before scrawling the current time with an erasable pen.
“There is something very human and endearing about the motion of the arms as they perform their task of drawing and erasing over and over and over again.”
Debra followed instructions that she found on Thingiverse and incorporated extra modifications suggested by other Thingiverse members. Even still, resolving the design was an iterative process that included using SketchUp to visualise how the mechanism works before sending files to Ponoko for laser cutting.
“The upload and ordering process was very easy. The hardest part was waiting for the package to arrive.”
And arrive it did, in a timely manner. Read on to discover how she added in a variation of the 3D printed cap for the dry-erase pen, and used the flexibility of Arduino programming to customize the code to the specific requirements of this project.
Making those detailed designs and laser etched text really pop
Laser etched details do often stand out pretty well in their own right, but sometimes it is a good idea to give them a helping hand.
Today we are revisiting an informative post in the Ponoko Support Forums that runs through using white wood filler to bring out the details on wood and plastic laser engraving.
The tutorial focuses on an example laser cut and etched from bamboo. Follow the link and you’ll be taken through the step-by-step process, including important tips such as remembering to clean off the smoke residue from the laser and how to avoid over-sanding in the finishing touches.
This is one way to do it – but we’ve seen people have great results with other techniques as well. Paints are ever-popular; model paints, acrylic paints… in fact paints of all kinds! Others use sharpie markers, crayons, and even glue mixed in with glitter particles.
Read the full tutorial to see if wood filler is the solution for your next laser etched project.
Ponoko Support Forums: White wood filler
A material that enables your design to shine
When we talk about laser cutting in acrylic, most of the time the focus is on materials with that familiar glossy surface. Today we are taking a closer look at glossy acrylic’s lesser-known (but just as fantastic) cousin, Matte Acrylic.
Available in the Ponoko Materials Library in both black and white options, Matte Acrylic is textured on the top surface, and glossy (like the regular acrylic) on the back. We have a detailed post in the Ponoko Support Forums, which runs through many of the characteristics of this versatile material. Supporting images provide real-world examples and help to clarify whether Matte Acrylic is the right choice for your next laser cutting project.
Learn about how to best make use of this material by combining it with glossy acrylic on larger projects. See examples of the contrast between shiny and matte finishes, and how to use metallic paint to fill laser etched details. There are also a few quirks to discover that you may not have encountered before, and the tutorial includes handy tips and tricks such as advice on removing protective paper.
See more in the full post on Ponoko’s Support Forums.
Free design shows exactly what will happen in your material of choice
The mysteries of how to get the right settings for vector and raster engraving is something that can take time and practise to fully unravel. Thanks to this free file from James Stokebrand, you can create a mini laser etching cheat sheet in your favorite Ponoko material.
The file is set to work perfectly with Ponoko’s P1 template size, and it includes a range of raster fill values, vector line fill values and even some handy tips for designs that use vector linework.
Pictured above is the file etched onto blonde bamboo, and James has also provided high-res sample images in black acrylic and cardstock. Although there is nothing that can truly replace holding a physical sample in your hand, zooming in on these images is pretty close to the next best thing.
Take a look on the Ponoko Support Forums to see for yourself. The file can be downloaded from the Ponoko Showroom, and if it all looks too confusing for you (don’t worry, we all start somewhere!) there is a simpler version of what James has provided all cut and ready to go on the Ponoko Samples page.
The Laser Cutter Roundup — a weekly dose of laser-cut love: #205
Hey, Sam here collecting the post from The Laser Cutter.
Make sure you join TLC’s Facebook page.
After the jump, Chicago, police boxes,, 10, and three… (more…)
Last chance to get your hands on a laser cut rope braiding machine
When we first came across an earlier version of this laser cut mechanical marvel, it had our heads in quite a spin. The 21st century makeover of an 1890’s industrial artefact is a fantastic example of how laser cutting can enable accessibility to broader technological possibilities.
Ever true to his word, David from Mixed Media Engineering has refined the design and launched a Kickstarter campaign for what is now known as the Rope-O’Matic.
With a diverse range of applications it is hardly surprising that this very unique laser cut product has eclipsed its modest campaign funding goal.
Check it out before you miss your chance… don’t tie yourself in knots, there are only a few days left to secure yourself one of these novel devices.
Laser etched impact made easy
As the Festive Season approaches and we become more and more enamoured with all things shiny, here are our tips on how to use laser etching for some serious impact on mirror acrylic.
People love the combination of crisp laser definition with the reflective sheen of mirror acrylic, and to create these effects there are a few key points to remember. The main one is that you’re not etching into the surface of the acrylic, but rather through the reflective coating on the rear of the material.
Another tip that may seem obvious, but you’d be surprised how often it can sneak up on you – remember to reverse the artwork so that it reads correctly when viewed from the other side of the sheet.
For an informative collection of examples including vector and raster engraving, as well as different approaches to filling the etched designs, head over to the Ponoko Support Forums for the full scoop.