Makes a manifold I use for distributing nitrogen gas around a leaky o-ring. Polyflow tube is glue into inlet, N2 comes out through holes. Default parameters generate sections that fit on a Makerbot Thing-o-matic.Usage: Print STLs directly OR Modify parameters at top of to adjust number of holes, sizes, length of sections, etc. Generate models using functions at bottom of file: manifold() - To make single section manifold view() - To view empty area inside the block left_manifold() - To make three section manifold (1 left, N center, 1 right) center_manifold() - To make three section manifold (1 left, N center, 1 right) right_manifold() - To make three section manifold (1 left, N center, 1 right)Also, I hade to rotate the STL orientation to get rid of overhangs, etc.