I'm trying to figure out how to install a external spur gear into an assembly but the option doesn't appear in the Ansi toolbox. Any suggestions?
Ken, two things:
1. The short answer is I don't know why it's not there for you because it is there for me.
2. Beware, these Toolbox gears are merely rough representations. If you want a parametric spur gear with an accurate involute profile those files are out there. I've generated and offered several versions on this forum myself. Use John's Forum SEARCH RESULTS - Excel (10/10/2017) to locate such discussions and files.
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