Part of this morning was spent on preparing another session at the FabLab (planned for this weekend). I've finalised the 3D printing data for the whorl bit on the bobbin, and finalised the lasercutting data for the bobbins themselves as well as the flyer "wings". The previous incarnations have already proven that the numbers and setup do work, and that I will be able to quickly spin thin, high-twist yarns with the tuned wheel.
Unfortunately, it seems that I will also have to replace the part that holds the flyer and the bobbin, because the new arrangement of bobbin and flyer and flyer whorl results in a slightly shifted alignment between drive wheel and whorls. Slightly, in this case, being big enough to cause trouble.
A bit more planning is thus necessary. But if everything works out as it should, I will have a functioning, fully-tuned wheel on Sunday.