Cell Fracture adding unintentional items to object

Question

I'm trying to use the Cell Fracture add-on in Cycles Render to shatter a wine glass. The final product had added "blocks" onto the final object.

Does anyone know what could be causing this and how to fix it??

Original:

Shattered Object:

Make sure glass object is manifold before fracturing it (especially in the place where unexpected geometry appears) — Mr Zak, Sep 06 '17 at 08:06

score 2 · Accepted Answer · answered Sep 06 '17 at 07:54

2

It's because your "wine glass" has no volume in some parts. The brim of the glass is infinitely thin. How can something like that be fractured?

Try adding some thickness to your model first before doing your spin extrusion (if that's how you made this).

answered Sep 06 '17 at 07:54

Mentalist

Thanks for you help. Thickening it alone didn't fix it, but making sure it was manifold as @MrZak suggested was the other thing that helped fix it. – Matthew N Sep 07 '17 at 02:02
Glad it worked out for you! :-) – Mentalist Sep 07 '17 at 02:45

1 Answers1