Packet39 Blog

Laser Engraving Timelapse

- May 30, 2016

Picture: Video:   The end result. The one on the left was done with the laser slightly out of focus.


Building a laser engraver, Part 4

- May 23, 2016

I added two cooling fans, and properly focused the laser unit. The major remaining tasks are building an enclosure and figuring out a software tool chain. I suspect the latter will be the hardest part of this project. Here is a laser cutting torture test, full power at 1000 mm/s. Feel free to jump to the end of …
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An overview of the 3D printer Kickstaters – Part 1 – The Disasters

- May 20, 2016

  A list of 3D printer kickstaters that were successfully funded and what happened to them afterwards. Complete Disaster RigidBot 2013 ,  $335 RigidBot raised over $1,000,000 on Kickstater back in 2013. The design seemed solid but that wasn’t enough. Some backers got their printers but reported poor performance and a slew of technical problems. On September 2015 the …
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Building a laser engraver, Part 3

- May 19, 2016

After a run of bad luck with L-Cheapo units (kudos to their excellent and responsive support) I decided to get a much more expensive JTech Photonics unit. I bought the 2.8W laser, due to the smaller dot size (0.18mm) compared to the 3.5W, and the price difference. The JTech unit is superbly built, their documentation is excellent and …
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WaxCast by MakerJuice, first results

- May 9, 2016

I’ve recently started a small jewelry business with my wife (NunAndNoot), she is the designer and I’m the technician. Our biggest struggle is to reduce the cost of making our items, and to do so I need to be able to 3D print the items at home and cast directly from the prints. Enter, WaxCast …
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Free & paid 3D modeling tools, for 3D printing

- May 7, 2016

Which CAD should I use? I’ve been asked this question so many times I decided to make a blog post about it. Free CAD tools TinkerCAD.com – If you absolutely have no experience with 3D modeling or design, this should be your first stop. They have a slew of fully interactive tutorials that guide you every …
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Three.JS for Fun & Profit

- May 4, 2016

I’m giving a talk this Thursday at ExplodeConf in London, Ontario. The talk is about Three.JS, a neat JavaScript WebGL wrapper for creating 3D content in your browser. I will post the full slides after the talk, here is a sneak peek at what I will be creating, piece by piece, during my presentation. Click on …
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Resin Casting – Tips and Tricks

- April 3, 2016

Got a physical object you want to duplicate? Want to make 100 copies of a 3D print, but can’t afford to wait 100 days? Do you want a robust sculpture but don’t have a kiln? Resin casting to the rescue! Getting started You will need an item to be duplicated, 2-part silicone for the mold …
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Building a laser engraver, Part 2

- March 29, 2016

While waiting for my L-Cheap 3.5W laser to arrive, I decide to fit my layer engraver with a drawing head so I can test the software toolchain. I hooked up two 12v solenoids to the hotend port of the Azteeh X5 controller board. The Smoothieboard firmware has an option to define “Switches“, these are very handy …
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