model
Animated Opening Curtain
Get this modelThe animation is Cloth Simulation based.
Check the animation: https://www.youtube.com/watch?v=fSE3Ti4XB2I
To move the curtain your timeline must be set to frame 1
After rescale and reposition, select one of the curtains, go to physics tab, search the cache section in the cloth simulation, hit delete all bakes and then bake all dynamics.