When to Trowel Plaster?

It begins when the plaster starts to darken as it dries. This is where you can run the trowel with a firm pressure over the entire wall to finish. And you're done!

When should I trowel plaster first?

First trowel should be a dry trowel no water but this depends on the suction so no real rule here . second and third trowel with water start at the top of the wall . It should be about 10:00 now go and have break hard trowel the wall after break to a nice finish ,clean wood work .

When should you flatten plaster?

When the plaster is becoming cheesy in consistency (another 15-30 minutes later, depending on how quickly you got the first coat on, going the way to Play-Doh or putty in consistency), take your clean trowel and flatten the plaster as well as possible, with the trowel at a shallow angle.