Electronic and Technical Arts

The Electronic and Technical Arts studio at BARN is generally modeled after a “makerspace” or “hackerspace”. We are interested in rapid prototyping and fabrication, 3D printing, electronics circuits, robotics, embedded electronics, and software. We like to experiment, and try new things.

Some of the equipment we have:

  • Full Spectrum 45 Watt CO2 laser cutter
  • Ultimaker 2+ 3D printer
  • Prusa i3 Mk2 3D printers (currently 2)
  • Four-channel Digital Oscilloscope (Rigol DS1104Z)
  • Microscope and hot air soldering station
  • Lots of miscellaneous hand tools

New members can receive orientation and training on equipment during our posted open studio times. Open studio times are also a great opportunity to stop by and check things out as a non-member. For non-members, there is a $10 drop-in fee to use tools.

You can contact us with questions here.

Laser Cutter

Our laser cutter is a Full Spectrum Gen 5 Hobby model, with a 45 Watt tube. It is generally capable of cutting wood products up to 1/8” and acrylic (Plexiglas) up to 1/2”. It can also mark many other materials. Its cutting capacity is approximately 20” x 11-1/2”.

The Laser is available for use during open studio times, by trained BARN members.

Laser Policy: laserPolicy.pdf

Approved materials list: laserableMaterials.pdf

There is some support from the company website, including tutorials and manual

We usually use the free program Inkscape to design for the laser.

Makercase is a tool for generating box plans.

3D Printer

ETA currently has three 3D printers:

  • One Ultimaker 2+  (uses 2.85 mm filament)
  • Two Prusa i3 Mk2  (uses 1.75 mm filament)

The majority of printing is done using PLA filament. It is easy to work with, gives off no fumes or harmful particulates, is widely available and is inexpensive. PETG and nylon filaments are approved for use, though both are more difficult to work with than PLA.

We have had good results with PLA from MeltInk, eSun, MakerGeeks.com and filament found on Amazon. Check with a studio monitor before purchasing if you have any questions.

Use Cura software to slice your model for printing. The default profile for the Ultimaker 2+ is fine. For the Prusas, change the default settings to settings posted in the studio. This will give you better results and fewer print fails.

gcode.ws is a helpful site to for  visualization and analysis of your gcode file.


How to solder How_To_Solder.jpg

Oscilloscope basics, fairly comprehensive: XYZs of Oscilloscopes (PDF)

A multimeter tutorial from SparkFun


Contact us here.

The ETA Studio Phone:
206-842-4475, ext. 211


General studio policies: ETA_policies.pdf

Our “Standard Operating Procedures” document: ETA_SOPs.pdf

YouTube videos of ETA talks and presentations

Facebook page

Meetup page

ETA Resource Library; information about the studio, our equipment and of general interest.