PreForm flags models as “Broken” due to “Integrity Issues” as shown below.
I’ve always ignored the repair option and have had no quality issues as a result. This topic has been discussed quite a bit on this forum (A, B). Scrolling through layers provides a basic method of mesh-checking but does not always help in locating errors. It would be useful to have more detail on why a model is being flagged, and where the issue is located.
Many online 3D printing resources offer a detailed visual for observing non-manifold edges, boundary edges, and intersecting faces. Such as Protolabs, shown below.
If PreForm included a feature similar to this, it would be incredibly helpful for pin-pointing design errors and problematic geometry.
Hi @jmasterson -
Thank you for pointing me to this, good to know.
My main issue though is that the model is not being exported to Preform anymore IF Preform is already open. See below:
I need to close PreForm, then go back to Fusion and choose 3D Print. It then opens Preform with the model loaded.
I select 3D Print, the dialog box opens and I follow the procedure as I have been doing for years. The hit ok and are greeted with a pristine nice clean build platform in Preform.
If however Preform is closed at the time of doing this, all works as expected, but take more time as Preform needs to be closed first and then open.
It is not the end of the word, just annoying as hell 
As there was a FW update, Preform update and Fusion update at the same time, I have no idea where things went wrong.
Regards, Friedl.
Regards
Apologies for the confusion @Friedl_1977, I linked to your post by mistake. That certainly sounds like an annoying bug. I was not able to recreate your issue, but I have noticed similar bugs before. I often have to go through “Save as Mesh > Print Utility” twice before the model actually loads into PreForm, but after that initial glitch every model will normally transfer on the first try.
As you said, it’s definitely hard to tell where things went wrong with all the FW updates. Since Fusion changed the “Save as Mesh” process (now with separate options for Export, Print Utility, and Manufacturing) I would think that would be the first place to look.
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No problem… Right now I am just trying to print with less visible layer lines than on my UM. Will look at this again later 
