Combine models into a model How can I simplify the wire structure? I can't simplify it after joining with Join and Booleans is not working well (with Union option).

Thanks in advanced!

Marcell
It looks like Boolean doesn't work well because of overlapping faces. Maybe there's another to do it, but to merge 2 crossed Parallelepipeds, you could use the Tinycad addon:


Download the Tinycad addon: https://en.blender.org/index.php/Extensions:2.6/Py/Scripts/Modeling/mesh_tinyCAD
Enable it in your Preferences.
Select your whole mesh and press W > Tinycad > XALL/Intersect Selected Edges.
It has created some additional vertices on the crossing edges but it has also deleted faces.
Remove all the doubles with W > Remove Doubles.
Fill the faces with F.