I have a new Marshall Town Plastering Trowel 11"x4.5" I find the corners tend to rip the plaster skim, a problem I didn't have when I borrowed a professional's tools. So I presume it's the new trowel that needs filing down or edges rounding off.
What do the pros do to 'wear-in' their new trowels?
What do the pros do to 'wear-in' their new trowels?