Recorder Extended with Bb Hole, a 3D-printed recorder
Photo: lysithea81 via Printables, CC BY-SA. Resized and converted to WebP.
Woodwinds · Recorder

Recorder Extended with Bb Hole

A soprano recorder that reaches a half step or whole step below low C

Designed by lysithea81, published on Printables

CC BY-SA Commercial use OK Build info 5/5

Licence verified on Printables, 20 October 2026.

Base design
Remix of a classic printable soprano recorder in C
Extra notes
Low B (half-closed hole) and low B-flat (closed)
Fingering chart
PDF on the page
Difficulty
Easy to medium; needs airtight prints
On Printables
56 likes · 655 downloads · 3 makes · 9 comments (as of 20 Oct 2026)

About the Recorder with Bb hole

A standard soprano recorder bottoms out at C. This remix adds an extra protruding hole near the foot, worked by the right little finger: half-cover it for low B, close it for low B-flat. You get those notes without blocking the bell. It also plays up into the high register, though the top notes need more breath and come out loud.

The new hole changes the fingering slightly. F now lifts the index finger rather than the middle one, and going from F to G moves both hands. There's also a notch to rest your right thumb. A fingering chart PDF is included. The designer describes PLA as warm, airy and flute-like, and PETG as clearer and brighter. She had no luck with ABS, because any weak layer bonding leaves a recorder that hardly sounds. She also notes that some prints play their low notes better than others, for reasons she couldn't pin down.

Who it's for. Recorder players who want to reach those extra low notes, and anyone printing a first wind instrument. The demo video shows the range.

What you'll need

Printed parts

  • Head, body segments and foot

Bought parts

  • Petroleum jelly for the joints

Tools

  • Optional: a test vase to check your filament prints airtight

Build overview

Video

Play video: B-flat recorder demo (loads YouTube)
B-flat recorder demo, Electronics by Julie (the designer). Plays from youtube-nocookie.com after you click.

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

Photos

All photos: lysithea81, from the design page on Printables, licensed CC BY-SA. We resized them and converted them to WebP. These adapted versions are shared under the same licence.

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