This float comes broken in to give you the best results right out of the box. Once your top is flat from screeding, use a magnesium float to flatten and smooth the tops while opening the pores of the fresh concrete, allowing bleed water to evaporate and air to escape. Once the concrete is firm enough and all bleed water has evaporated, use a steel trowel for your final finish.
Light weight magnesium produces a smoother finish than wood.
Uncoated magnesium means no need to break in.