How to Replace the Cork in a Trombone Water Key

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How to Replace the Cork in a Trombone Water Key: crwdns2935265:00crwdnd2935265:01crwdnd2935265:02crwdne2935265:0

How to Replace the Cork in a Trombone Water Key: crwdns2935265:00crwdnd2935265:02crwdnd2935265:02crwdne2935265:0

Rotate the ruler 90 degrees and repeat Step 7.
Your cork slice should now have four marks equidistant from the center mark.
Draw a circle connecting the four marks around the center.

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