I'm fairly new to 3D modelling and pepakura, but I thought I had the basics down. I used metasequoia to build an object consisting of triangles (it's a low-poly mountain) and then opened it with pepakura. After tweaking the model so I had no unwanted open edges I unfolded the object and it seemed fine at first. Here's my problem: All of the pieces (that should be triangles) are four-sided pieces after unfolding. It took each triangle and mirrored it. I don't think this is typical or how it is supposed to look, but I could be wrong. Any ideas on how to remedy this? Meaning, is there any way to unfold the object so I have pieces that aren't mirrored? Also, there is one triangle that is behind another (on the inside of the the object), but that particular face was deleted in metasequoia to fix it, yet it still shows up in pepakura. Again, any ideas would be helpful and I would be most thankful.
I also need to add that even though I designate the cutting lines the program cuts all the triangles out individually when I click unfold. I can't seem to get anything grouped together. And if I try to make adjustments in metasequoia, the fix just ends up with a model with several new red lines in pepakura that can't be fixed. I'm kinda losing it.
Edit/Update: Turns out almost all of the faces in metasequoia were doubled, so I unified them over and over again until I couldn't. That solved the mirrored pieces issue and my problem of not being able to group together triangles for grouped cuts. I finally got rid of the triangle-behind-triangle issue, only to have the problem pop up in two new areas. Also, a new slew of red lines emerged that I'm trying to get rid of.