Rossi46
Private Member
You are correct, but sometimes it's near impossible I'm sure you'll agree.
After a few weeks with it I think this: 1st, 2nd coat and flatten with steel, then 2 wets and dry with plastic.
I'm still trying to find it's niche, it does have one.
I feel that the sponge should be stronger in compression and the plastic 20% more rigid. Then like you say, it would take the shapes out of the wall.
1st coat - spat - 2nd coat - spat - wet trowel - plazzi ( before plaster dries too much)
60% of the time it works every time.