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Is there a formula or basic guide line to breaks in each thread on a bottle & cap? (variable helix)

By SCOTT on 28 Sep 23:35 0 answers 286 views 0 comments

I designed a variable 2.5 rev. helix sweep (extruded on the cap and bottle).
.3 inch pitch on 1st revolution starting from the bottom going up
.09 inch pitch on the remaining rev's.
I used a continuous sweep with no breaks in the threads.
But every bottle & cap I looked at has breaks at certain degrees of each revolution.
Is there a formula or basic guide line to these breaks in each thread?

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bottle start 3.SLDPRT, 4.14 MB
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