this is an a'(a just above middle c) closed organ pipe for a future project. i plan on printing a 20/30 note scale. i have used mainly http://www.mmdigest.com/Tech/pipesRecipe.html for the dimensions and am waiting on filament to print a piece. plans are to print this in wood filament once i have a full working set of prototypesprint each part sand mating surfaces and glue. apply padding to the stopper and inset. then use a chromatic tuner to tune to a' (the one above middle c)