Nerdyharpa v2, a 3D-printed nyckelharpa
Image: JaapBrand via Thingiverse, CC BY-NC-SA 4.0
Folk & world · Nyckelharpa

Nerdyharpa v2

A self-assembly nyckelharpa, the Swedish keyed fiddle, from the Nerdy Gurdy designer

Designed by JaapBrand, published on Thingiverse

CC BY-NC-SA 4.0 No commercial use Build info 3/5

Licence verified on Thingiverse, 20 October 2026.

Instrument
Nyckelharpa: bowed, with keys and resonance strings
Construction
Printed and laser-cut parts, like the Nerdy Gurdy
Difficulty
Hard
On Thingiverse
84 likes · 12 comments (as of 20 Oct 2026)

About the Nerdyharpa

The nyckelharpa is Sweden's national instrument. It's bowed like a fiddle, but you change notes by pressing wooden keys, as on a hurdy-gurdy's keybox, and a set of sympathetic 'resonance' strings rings along underneath. The designer describes it as a hybrid of a hurdy-gurdy and a viola that plays almost like a guitar with a bow.

The Nerdyharpa is a self-assembly version, 'Ikea-style' in the designer's words, using the same mix of printed parts and laser-cut parts as the Nerdy Gurdy. The Thingiverse page is brief, so see the Nerdy Gurdy site for details. The two videos below are build diaries by makers who assembled one.

Who it's for. Folk musicians and experienced makers, especially anyone who has built a Nerdy Gurdy.

What you'll need

Printed parts

  • Keys, keybox and fittings (see the files)

Bought parts

  • Laser-cut body parts, strings and hardware

Tools

  • Access to a laser cutter or ready-cut parts

Videos

Play video: Building a Nerdyharpa: part 2 (time-lapse) (loads YouTube)
Building a Nerdyharpa: part 2 (time-lapse), Marijke Violin (makers who built one). Plays from youtube-nocookie.com after you click.
Play video: Working with the Nerdyharpa building kit (loads YouTube)
Working with the Nerdyharpa building kit, Jos Koning (makers who built one). Plays from youtube-nocookie.com after you click.

Nothing loads from YouTube until you press play. Video thumbnails are © their creators.

Photos

Thingiverse doesn't let us fetch its gallery, so the photos stay on Thingiverse. See them on Thingiverse ↗

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