Two meshes in the same space?

[Anonymous]

hi there,
i seem to have this problem alot. i start to model something and then many hours later i might go back a say delete some faces to append my mesh , only to find that the mesh has another identicale mesh underneath the other one., I have included an obj if anyone can have a look at it to see how this is happening. i now am at the stage of throwing a fit because of all of the wasted hours working on a mesh only to find it unusable. the only reason i noticed that there was another mesh underneath was after deleting some faces , and then doing the fill hole command and then trying to reconstruct the mesh only to find that its a complete mess.
Is there a way to avoid this? also if you are deleting faces and then you use the "fill Hole" or the "bridge" command are these the best tools to use to rebuild the mesh, i mean i have used the bridge in the past and if you bridge in parallel , the adjacent edges dont join together and you have to manually join the vertices, is this right?

any assistance would most grateful as it would hopefully save me time in the furture

[Anonymous]

I've done the same thing before. For me, I think it was probably just because I must have accidentally duplicated my mesh by hitting "Ctrl-D" whilst trying to save "Ctrl-S" or something. What I do nowdays is to keep the poly count dispalyed in top left of the work area and check it every now again. That way if it suddenly doubles in size... well you can hopefully undo enough times or revert to a backup before that happened and don't loose too much time.

In regards to the 'bridging' you're talking about. If you're just wanting to reconnect things, I usually just use the 'Merge Edge' tool and then use the "G" shortcut key to 'redo last command' and sew away like a seamstress ;)

[halfstone]

Using the bridge tool in parallel - i.e., sequentially across adjacent edges, will produce bridges with vertices that are not merged. This is behaving correctly; you do have to merge them manually afterward. However, you can double-click on your edge and bridge several edges at the same time; this will produce a bridge with merged vertices.

I've seen your problem with the duplicated geometry before, and I don't have an answer as to why it happens except that, as "Marinius" says, it might just be an inadvertent duplication - maybe moving too fast or something. Often the "cleanup" tool is good for this situation; there is an option where you can delete "lamina faces" which are faces sharing the same edges.

One thing I have found that helps to keep a mesh clean is to switch the face selection method from "entire face" to "center". This is in the selection section of the preferences window. When you have the preference set to "center", Maya shows a blue dot in the center of a face, allowing you to see if you have an extraneous face anywhere - like on an edge, for example, the result of an incomplete extrusion. This is a face with zero area, and can cause you the same kind of problems as the double geometry.

[Anonymous]

many thanks for your tips guys..!!

i think i might have just come accross something..

i might have had caps lock on when i ctrl+d so i ended up duplicating special (maybe), but there would have been more instances, ? no .. that couldnt have happened. anyway i normally have lamina faces option on already. i also had a issue when extruding, in that if i made a mistake on a extrude and then ctrl+z back to undo it , you would have to remember to ctrl+z one extra otherwise there would be a extrude there but you cant see it , so you go to extrude the face again and you would be adding more faces on the inside of the mesh , which only come apparent when you go to smooth your mesh and its in a right state.

[Anonymous]

i also had a issue when extruding, in that if i made a mistake on a extrude and then ctrl+z back to undo it , you would have to remember to ctrl+z one extra otherwise there would be a extrude there but you cant see it , so you go to extrude the face again and you would be adding more faces on the inside of the mesh , which only come apparent when you go to smooth your mesh and its in a right state.

When you extrude and then pull the extrusion out and into its new position, I guess that's 2 steps so your first undo would be moving it back to its original location (which is the location of the face you extruded from) and your second undo would be actually undoing the extrude itself perhaps? Not sure..

If you turn Face selection on and are able to see the face center markers on the edges of a face at any stage, its a good way to tell if there is an extrusion somewhere that there shouldn't be.

Make use of that or don't as you will 😛

[gaboreturi]

Lot of people seems to have the same issue... No solution for this as all except ctrl z 😄 

[Kahylan · Accepted solution]

This thread is from 2010... back then the "Mesh->Cleanup..." command wasn't created yet. Thats what is used to fix this kind of Problem generally.

I hope this helps!

[gaboreturi]

Yes, and there are threads from 2019 and 2021 with the same title and solution, but Clean up not solving the issue unfortunately. Solution is to watch polycount, or delete dupli mesh parts one by one after separation, neither of these are technically elegant nor satisfying solutions during the years. Maya used to have a lot of solutions for everything online since lately, but thanks for the tip anyway!