- Joined
- Jan 14, 2012
- Messages
- 56
I need to fabricate a union for my brake line where it passes through a mounting point on my motorcycle. The major diameter of the aluminum piece I'm replicating is 3/4" and the pitch is 16 TPI. To what diameter should I turn down my work piece before I start cutting the threads? This will be my first attempt at cutting threads. Should I use the diameter listed on the drill/tap guide, which would be .6875 for aluminum? Thanks.
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