i was want to make cylinder with holes i make this plane
and then i add array and curve modifier as shown :
you can see the mesh is not connected even when merge is enabled so i apply the array modifier and then merge them manually in edit mode
but the problem when i want to change the size of the mesh by scale the curve
the merged vertices that i connected them (merge) deformed in strange way unlike other vertices :
so i know it should scale before apply array but i just want to know why this happen it just a merge ??