Regretfully Just Add Sharks Ltd has closed at the end of September 2017. Over the last year Just Add Sharks Ltd has faced challenges with the vanillabox crowdfunded Open Source laser cutter project and with leads times from their suppliers. Demand for low cost laser cutters has outstriped the supply. Lack of timely supply causes delays and disappointments to customers. This is further exasperated by the drop and fluctuating value of pounds sterling. Just Add Sharks Ltd will honour all customers manufacturers warranties.

Customers should continue to email their requests for technical support, software support, spare parts and warranty enquiries to or using the contact form below.

Engraving With Sunbeams

Inspired by all the usual experiments one might do as a kid with a magnifying glass and some sunlight, Instructables user rabbitcreek decided to make his own engraving machine.

Powered by an Adafruit Feather 32u4 Basic Proto, he uses a couple of stepper motors to move the project piece around, and a servo to operate the shutter. To focus the sun's rays onto the work, he uses a large premium grade Fresnel Lens.

When first powering up the machine, the focused rays were so powerful that they just set the work on fire. To mitigate this somewhat, he devised a couple of plans. The first was to cover up a large portion of the lens with removable velcro. The second was to include a shutter, so that the beam was not hitting the work when the gantry wasn't moving. Originally, there was a plan to build a system that would allow the machine to auto-track and follow the sun, but it worked out a lot simpler to just adjust the machine manually every 10 minutes.


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  • 20th April 2017
  • Kirsty

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