Just a random thought while exploring Blender. I’m a longtime Blender user so I can’t really think how the Weld Modifier would be practically useful since you can just use Merge By Distance to merge vertices. Maybe for a Modifier dependent modeling? It would be cool if it can “merge” vertices between different Objects and add a Subsurface Modifier so that way you can have different Objects while being able to smooth between them. How do you guys use the Weld Modifier if you do?
Gleb has a vid about this on youtube.
apparently it allows you to have a merge vertices by distance effect, in a non destructive way, if you ever need it in a stack of modifiers, as explained here: https://www.youtube.com/watch?v=KetZVX3Blf4
Two places you could use it is after a bevel modifier so if you have clamp on and the bevel meets, the weld takes care of any overlapping points. Also used after mirror / boolean at times for a similar reason. So say you boolean a shape which would leave points very close to each other, the weld modifier would ‘eliminate’ those points which means a bevel modifier following that would likely work better.
I think it’s useful when you have some stacked modifiers and somehow you end up with overlapping geometry that doesn’t let you add more modifiers properly.
Like when you make a closed, circular shape with the Simple Deform modifier: the overlapping vertices at the extremes aren’t merged (so you can’t add a subdivision modifier). The same with circular arrays, etc
Good points, it’s still finicky in those regards but just like Gleb said, if they add more features on it then it’ll be more useful.