Score straight lines at a depth of _ disibledevent = " mso - spacerun : yes " > uv paints . with good water - proof , damping - proof and dust - rejecting effects , suitable for high grade decorative and construction products 用多用刀、電工刀或碳化尖刀,劃下直線,深度為板厚的1 / 3左右。用力往下折斷開,板邊有毛刺是可用銼刀挫平。