Mirror Modifier at compined object has diffrent axis

Hey I want to connect vertexes of 2 parts of 1 object which were mirrored.
I modelled every part on its own and joint them but something went wrong with their axis I think…

I thought of snapping them which worked on some parts but the axis makes it almost all the vertexes impossible.
I dont even know how to name the problem with the axis… how can I solve this or is there another way to attach the vertexes of those to parts to each other?

I guess your origin is messed up or did you use an mirror object?
Set the origin/mirror object to the center of the open face of the half head. Or simply to an vertex on the outer rim of the open face.

yes I mirrored it but I can’t connect the vertexes this way.
can I switch it somehow to the same side for both parts?

Update: I solved it, thanks a lot! :slight_smile:

I’ve been following a tut on YT, I completed the base mesh for a character from a cube privative, the next tut is setting up for sculpting. his instructions where; in sculpting, sculpt mode, add modifier, click Multiresolution, (I have the mirror modifier on) click subdivide, half my figure disappears along the Z axis! What am I doing wrong ? Also; I’ve got this distorted topology in two places ? Thank you

Screenshot 2021-05-24 081801