User Manual

Instead of round tripping back to your 3D modeling application to fix the “duplicated” vertices,
the Weld 3D node allows you to do this in Fusion. Weld 3D welds together vertices with the
same or nearly the same positions. This can be used to fix cracking issues when vertices are
displaced by welding the geometry before the Displace. There are no user controls to pick
vertices. Currently, this node welds together just position vertices; it does not weld normals,
texcoords, or any other vertex stream. So, although the positions of two vertices have been
made the same, their normals still have their old values. This can lead to hard edges in
certain situations.
Inputs
The Weld 3D node has a single input for a 3D scene or 3D object you want to repair.
–
Scene Input: The orange scene input is connected to the 3D scene or 3D object
you want to fix.
Basic Node Setup
The Weld 3D node is placed after the geometry that has duplicate vertices problems.
Sometimes problems are exposed when displacing the geometry. In that case, placing the weld
after the geometry but before the Displace 3D can repair the issues.
Weld 3D is placed after the 3D geometry that needs repair
Inspector
Controls Tab
The Controls tab for the Weld 3D node includes a simple Weld Mode menu. You can choose
between welding vertices or fracturing them.
Fracture
Fracturing is the opposite of welding, so all vertices are unwelded. This means that all polygon
adjacency information is lost. For example, an Image Plane 3D normally consists of connected
quads that share vertices. Fracturing the image plane causes it to become a bunch of
unconnected quads.
Chapter – 80 3D Nodes 1739