Building Team Blog

David Barista is Editor-in-Chief of Building Design+Construction and, properties that combined reach more than 100,000 commercial building professionals, including architects, engineers, contractors, and building owners. David has covered the U.S. construction industry for more than a decade, previously serving as Editor-in-Chief of Professional Builder, Custom Builder, and He has won numerous editorial awards, including three Jesse H. Neal Awards and multiple honors from the Construction Writers Association and the American Society of Business Publication Editors.


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Napkin sketch 2.0: High-tech pen allows designers to draw 3D structures

3Doodle pen from WobbleWorks
3Doodle pen from WobbleWorks
February 19, 2013

We already have 3D printers, so why not 3D pens?

U.S. startup WobbleWorks is rethinking the napkin sketch process with its 3Doodle pen. Instead of ink, the $75 pen uses colorful ABS plastic (the same used in many 3D printers) that quickly cools and solidifies, allowing the user to draw intricate 3D structures that literally jump off the page.

The trick, according to an article on the technology on, is a built-in fan that cools the plastic as it leaves the nib. This cooling process gives the plastic structural properties almost instantly (see it in action in this NewScientist video).

The company just launched a fundraising campaign on Kickstarter that has already raised $68,340 through 764 donations.


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