Mirroring iFeature (spline) has strange results

[lselter6PKDY]

When trying to mirror an iFeature (exploded involute spline) I get very strange results.
I have attached a video of the issue. Does anyone have a solution, or is this a known issue
Running inventor 2023.

[johnsonshiue]

Hi! This might be a bug in the way the iFeature was created or it is a Mirror Feature bug. Please share the files here. I would like to understand the behavior better.

Many thanks!

[lselter6PKDY]

I have attached an assy and two parts one where I have exploded the spline feature, but it behaves the same in both cases.

[johnsonshiue]

Hi! I believe this is a combined issue of the Mirror feature and the Involute Spline feature. I don't see a good workflow mirroring the geometry as features. I am wondering if mirroring the solid body will work better.

Edit the Mirror feature and change it to Mirror Solids -> New Solids. The result will be a new body symmetric to the source body. Then use Combine -> Intersect to merge the two bodies.

Is this what you were looking for?

Many thanks!

[lselter6PKDY]

yes it would be possible to use the mirror solid but this would add quite a lot of extra features to achieve what could have been a relatively simple operation.

In this case I was trying to get the tooth run-out on both ends, would it be possible to add this as an option in the spline tool?