Tailgut shims for adjusting afterlength

Tuning the afterlength (string length between the bridge and the tailpiece) is an important part of cello adjustments. Tradition holds that it should be 1/6th the '"stop" length (the distance between the nut and the bridge). Some famous luthiers prefer a 1/5th ratio for cellos, and that is indeed resonant, but I find it a little lacking in focus and response. The exact tuning tends to be a trade-off of resonances -- cello dependent like so many things.

In order to simplify tuning and testing the afterlength, I've created these little spacers in 1 mm increments so players can quickly and precisely test different afterlengths without the tricky step of untying and retying the kevlar knot.

Here is a link to the 3D printable STP files for shims ranging from 1 to 8 mm in thickness. They're specifically designed for Georg Schegolsky's wonderful carbon fiber tailpieces, and haven’t been tested on other tailpiece brands. Hoping you find them as useful as I have!