Align eges to remove holes when using mirror modifier When I am applying the mirror modifier to my mesh the bottom of the mesh gets a hole in it.



This is because the top edges is not aligned with the bottom edges. 



The yellow edge is the bottom one and the white is the top one. Is there any way to align the two edges (and all the others)?
There are few things you can do.


Enable clipping in mirror modifier options, select all and move everything towards middle point until top and bottom edges will align.
Rotate the object on the Y axis to align all edges.
Select top and bottom edges and press S then X and 0 to align them on X axis.
With clipping enabled, move all closer to the middle until closer edge will stack to it's counterpart on the other side, select further edge and with proportional editing enabled, pull it closer to the middle point.