Hi !
I wonder what is the best way to make a sliding door in the Unreal Engine 4. I read that Matinee works only in Level Blueprint.
I don’t want to use Matinee every time I want to make a sliding door in my level. How to make a universal mechanism?
I also thought about making an animation in Blender and call it every time I want to open a door.
How would you do that? 
I would suggest you try out great tutorial: A new, community-hosted Unreal Engine Wiki - Announcements - Epic Developer Community Forums
It will create a sliding door that can by copied and pasted anywhere. That’s because it uses a timeline to move instead of a matinee. Timelines are great for driving simple movements in Blueprints and work per Blueprint instance.
Thank you! That’s what I wanted.