Hi NightCabbage, it kind of looks like you may be making those surfaces sort of one at a time and drawing curves for each surface individually and just kind of eyeballing the curves to try and make them similar to one another.

That's not going to produce enough accuracy to join things together - instead of making an individual curve for each surface that you want to create, you've got to share more of the curve structure between pieces.

Like for example do not draw in 2 separate curves for this area here:



Instead of having drawn in 2 separate curves there, you want to have just one curve drawn there and then use that same curve in the construction of both surfaces coming off of it, that way the surfaces will be close enough to one another to be joined together and have a common edge.

If you just create a bunch of surfaces that are somewhat visually close to one another but actually come from totally different curves the surfaces generated from those different curves will not necessarily be close enough to each other to be joined.

Edges must be within 0.005 units of each other to be joined together into a single common edge. It's easy for things to be further apart than that if you are just drawing visually similar curves instead of using the same curves directly.


You can also do things like use the edges of an existing surface as the curve inputs to commands like Network or Sweep, that's another way of making sure that the generated surfaces are going to be within tolerance of the existing ones. Using edges in that way can be handy if you don't happen to have the original construction curves around anymore.

- Michael