@laughingcreek wrote:
@andy_woodward66 wrote:
IRL, if you tap a piece of round bar in the same way, the rest of the bar doesn't magically change dimension. FFS.
true, but you would also foul and shorten the life of your die feeding in over sized stock. IRL you would put a shoulder on it. that shoulder needs to be defined in some way, otherwise fusion would have to guess at it, and that would be the complaint instead.
I'm not sure I would necessarily agree with this. M5x0.5 6g has major dia. tolerance limits of Ø4.874-Ø4.98 so at the most you'd be turning off 0.126mm (0.063mm radial) before screwcutting or running a die down it. In practice you just wouldn't, as you'd let the screwcutting tool or die 'top' the thread. This has been normal practice in the companies I've worked at for the past 40+ years. You may do things differently but that's my experience.
If this answers your question please mark the thread as solved as it can help others find solutions in the future.
Marcus Wakefield
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I've created a Windows application (and now Mac as well) for creating custom thread files for Fusion. You can find out about it here. Hope you find it useful.
If you need to know how to offset threads for 3D printing then I've created a guide here which you might find useful.
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