This is a YouTube video. A sketch is created and revolved, and with a linear pattern a thread like structure is obtained. Why is making a real thread avoided ? Part file is attached.
Linear Pattern will be invalid i guess.
Not sure about the video, but that won't create a thread, you need a helix for a swept path.
Time around 43.00
Real threads are avoided as they consume memory, takes more time to rebuild. So until unless you need the real threads, avoid them and use cosmetic threads.
The revolve will produce conical and cylindrical faces. A real thread contains a helical surface.
Conical, plane and cylindrical faces only requires a fraction of the math to be generated. In particularly when used in drawings where accuracy is high and tangents and edges must be shown. If you have even a modest amount of fasteners with read thread in an assembly drawing, SW might be so slow, that the drawing is virtually impossible to work with.
You know what we've said before about some YouTube video's Maha.
Some will give you knowledge, some may lead you astray!
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