If you are giving an official exam, you need to get the official thumper. If you want something to approximate the exam test blow, get a piece of 3/8" steel rod, 12" long, and a piece 5/8" inner diameter pvc pipe 18" long. Glue some cloth punchings on the end of the rod to protect the keytops. With this you can control and drop a half pound weight 6 inches for a test blow. Repeat: THIS IS NOT AN OFFICIAL THUMPER, but it will give you a good estimate of a test blow for training purposes and self-testing. Ed Sutton ----- Original Message ----- From: "John Minor" <jminor at illinois.edu> To: <caut at ptg.org> Sent: Friday, January 14, 2011 3:24 PM Subject: [CAUT] tuning test blow jig? > Does anyone know where I can get the specs to make a tuning test blow jig? > > Thanks! > > John Minor > University of Illinois
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