Whistles for Carson Hall

I did not create this STL. Credit to Keith Ottlinger. These whistles are being donated to the family of Carson Hall, for fundraising efforts. Here is original post from the 3D Printing Club facebook page:



CALL TO ACTION!
I'll commit to printing a spool for the cause.
Dear 3D Printing Club,
I am writing to tell you about a very special little boy and an opportunity that we may have to help support his family. Carson Hall is 5 years old and he lives with his mother, father, and little brother in Hutchinson, KS. One year ago, Carson was diagnosed with a diffuse intrinsic pontine glioma (DIPG) brain tumor, a fatal pediatric form of cancer. A child diagnosed with DIPG today faces the same prognosis as a child diagnosed 40 years ago. There is still no effective treatment and no chance of survival. Only 10% of children with DIPG survive for 2 years following their diagnosis, and less than 1% survive for 5 years. The median survival time is 9 months from diagnosis, but Carson has