![]() The cap will screw on in one quick turn but because a multi-start thread was used, there are multiple threads fully engaged to securely hold the cap in place. A common example is a cap on a plastic water bottle. In both examples, however, 1/8” pitch is maintained.Īnother design advantage of a multi-start thread is that more contact surface is engaged in a single thread rotation. One full turn here, gives us a Lead of 1/2″, allowing for a quick connect and disconnect. And in the other, we have a 4-start thread. In our examples, we have a single thread with a pitch of 1/8”. ![]() This proves useful when fine threads are required, but at the same time you want a quick advance, for example like that on camera lenses. The main one is that it allows the lead distance of a thread to be increased, without changing its pitch. There are various reasons why someone might use threads with multiple starts. Today we are going to talk about the enhanced functionality to the Thread feature in SolidWorks 2017, mainly using multiple start threads. ![]()
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