Object not mirroring as intended in Blender

Question

I am making a character arm at right side and when mirroring the object, the mirrored object is not placed at correct position. I have read that the mirror modifier does mirroring with respect to the Object Origin (orange point). So i placed the orange point at the 3D cursor and then did mirroring. Unfortunately this mirroring does not work on objects whict are rotated.

This is the result i am getting:

Desired result:

Answer 1

You need to Apply Rotation before you can properly use the Mirror Modifier.

Applying transform values essentially resets the values of object’s location, rotation or scale, while visually keeping the object data in-place. The object origin point is moved to the global origin, the rotation is cleared and scale values are set to 1.