v30 (v29) Whistle - Compact Edition

thingiverse

This is a redesign of Goury's v30 whistle (thing:2783665) which was itself inspired by jzisa's v29 whistle (thing:1179160). After printing the v30, I realized that a significant portion of its internal volume did not serve any sound-making function - it seemed to be there solely for aesthetic purposes and to accommodate the keyring hole. It also presented some features that are challenging to print on FDM printers - namely, the curved top (which requires an extremely low layer height if you want it to appear smooth) and the curved inlet holes (that tend to curl up from overheating unless you print very slowly or have a well-tuned profile). I therefore present the v30 "compact edition". This whistle sounds similar to the original v30 but is approximately one-third its size, using 40% less material. Here's a comparison (with 0.2mm layer height and 0.4mm extrusion width): * v29: 13.83 grams * v30: 8.76 grams * v30 Compact Edition: 4.94 grams Details of the changes are listed in the section below. I've attached the .stl file for printing, the source .f3d file for editing in fusion, and the .step file for editing in other CAD packages if desired. Released under the GNU GPL license, just like the original v30 whistle.