Circular pattern of loft problem

[jackwcallen]

Having difficulties with a circular pattern of a loft cut feature.

Attached is the model, (Slightly peculiar looking thing I know).

For some reason, although there should be 12 instances in the pattern, only a few are produced at different places around the circle.

I don't think the alternating slot length is the problem.

[jeff_strater]

Thanks for posting the model - that always helps.

I think the problem is a geometry one.  I tried to fix this by turning the loft into a "new Body" loft, thinking that if I could pattern the body instead, then add a Combine to do the cut.  Before true feature pattern was in Fusion, this technique was a way to get around some face patterning problems.  In this case, it did not improve the result, but it does give more info:

This error usually occurs when the geometry is very close to coincident.

It's possible that the problems are with the "top" faces, because they are coplanar with the back face of the body:

You can see the "graphics fighting" between the body (that I colored as glass) and the patterned loft bodies (I colored red)

I will play around with your design to see if I can get it to succeed

Jeff

[HughesTooling · Accepted solution]

With a bit of reordering and the use of patterns I've got it to work, file's attached.

Mark

[jackwcallen]

Fantastic.

It seems that it required the lofting first and then extrude the rest away.

Thanks a lot guys for your swift help.

It's looking great now.