Float finish

Metal gives a smoother finish. Plastic leaves a micro-texture. Choose according to the desired effect.

When the plaster is still fresh but has started to harden. Too early, it sticks; too late, it's too hard.

With practice. Start on a small or less visible area.

For uniform smoothing, apply the plaster in a thin, even layer. Make crossed passes with the trowel, applying light and constant pressure. Be sure to cover all edges and corners well.

Trowel smoothing allows for a very smooth and homogeneous surface. It's a quick and economical technique suitable for large surfaces. It also gives a more finished and professional look than simple hand smoothing.

Choose a trowel size appropriate for the surface to be treated. A large trowel will be better for large walls, while a smaller trowel will be more practical for corners and cramped areas. Prefer a stainless steel trowel for a smooth finish, or plastic for a more textured look.

Be sure to clean and maintain your trowel to avoid marks or scratches. Always work in the direction of the light to spot areas to touch up. Take regular breaks to avoid fatigue and repetitive movements.

If the result is not satisfactory, you can lightly sand the surface to remove defects. Then apply a new thin layer of plaster and smooth again carefully with the trowel. Repeat if necessary until the desired finish is achieved.