Merge a curve with an object How can i merge a curve with an other mesh? It doesn't work with  ctrl+j - Error: no mesh data to join.

Is possible to do that?

I created a lightbulb and the filament is made from a curve and i want to merge it with the other parts.
Indeed there is no mesh-data if your object is a curve.
If you just want to move them together parenting the filament to the bulb would be a great non destructive option. Otherwise if you don't need to modify your filament anymore you can convert the curve to a mesh Object > Convert to > Mesh from curve and after that join the two meshes with Ctrl + J