Avoiding all of yesterdays mistakes I had another try today and it worked! The sound area ramps and openings are pretty precise and you can even see the small lines on the ramp from printing. I did not even care to file them away in the wax model, which I definitively will when I cast the final flute.
I will skip the filing/sanding/polishing – I am sure it would like beautiful – and will now focus on finalizing the concept / 3D-design for the flute.
Current progress:
1. Mouth piece is understood and ready to be casted in silver. I will solder an internal 8mm tube to the blow hole.
2. The SAC (internal shape) is still not clear to me yet. I will have to find a design in Fusion 360 that makes sense. It should be different than my wooden flutes in order not to waste too much silver. probably something like a tube which narrows down to the blow hole tube on the mouth piece side and guides the air towards the SAC exit on the other. I will see…
3. The sound area is also not 100% set. I will either just cast the top part as I did in the last steps, create an opening in the long tube and solder it OR I will cast part of the 20mm tube below the sound area with it. No idea … I will see …
3. The rest should be easy. A long silver tube with 20mm diameter and finger holes at the right place …
I feel like I am about 30% of the way and Christmas is still some time away 😉