Largest Graduated Cylinder

Published: June 13, 2017
by Charles Busada
Pudge the dog next to the finished butyrate cylinder

Pudge is modeling a rather large graduated cylinder here. This 10″ OD CAB Butyrate tube is welded to a butyrate base. It will be used to not only measure various liquids but to monitor pressure ratings for water-tight components.

And while I’m on this, this is a good time to describe the differences between large-diameter extrusions of butyrate and large-diameter castings and extrusions of acrylic. I came upon this recently in a fast-food restaurant. The material is acrylic and what you see is crazing and stress cracks. Butyrate, being an amorphous thermoplastic just does not do this under normal conditions.

And, the pretty final product under a test load.

Finished butyrate graduated cylinder filled with water for testing
A large acrylic tube covered with crazing cracks

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