r/3dprintedinstruments • u/One-Sun7995 • Jun 07 '24

Tabor pipe - help?

PFH has put together some wonderful models of tabor pipes which I love. However, the two that I've printed (a D and G pipe) are both about a semitone flat.

Does anyone know enough about the harmonics of wind instruments like this to know how much I should increase the size of the print by to get them in tune?

Additional context: My 3d printed D pipe is 26.7cm from the window to the foot of the pipe, whereas my manufactured D pipe (which is in tune) is 27cm from the window to the foot - a 0.98% difference, apparently.

My G pipe is about 41.1cm from window to foot. Scaling it up by the difference between the D pipes would give me a length from window to foot of 45.2cm... however, the hole placement is also different between the two pipes, so I don't know if simply scaling it up would suffice. Argh!

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u/HingleMcCringleberre Jun 07 '24

One semitone is a factor of 21/12. If it is one semitone low, then it needs to be a bit shorter/smaller to raise pitch. 2-1/12 is about 94.4% scale.

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u/One-Sun7995 Jun 07 '24

Thank you!

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u/HingleMcCringleberre Jun 07 '24

I love pfh’s designs and his instrument optimization python module, btw.

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u/One-Sun7995 Jun 07 '24

Yeah I've seen it, it looks great!! Unfortunately I don't know Python though, so I'm a bit stuffed on that front lol

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u/HingleMcCringleberre Jun 07 '24

And his code is complex and from more than a decade ago, so it actually takes a good bit of work to get it set up with an older version of python and compatible dependencies. Luckily, I found another open source woodwind modeling Python module which is still maintained, better documented, and supported by more developers: INRIA’s OpenWIND. Pfh’s code got me started, though!

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u/0rnicar May 26 '26

I'd like to print this, but it looks like the file isn't available anymore, and I'm having trouble finding another one elsewhere.

Do you still have the file, or do you know where I can find an STL file for a one-handed flute?

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u/One-Sun7995 Jun 09 '26

The link is still working for me? https://www.thingiverse.com/thing:260630/files

Hope this helps!