It is usually use the lower pressure to avoid excavating the paste from the stencil and other advantage is that less abrasion than the polyurethane type but more expensive and it is also causes the stencil abrasion 金属刮刀使用较低的压力,从而避免从开孔中挖出锡膏;金属刮刀不像橡胶刮板那样容易磨损,其成本比橡胶刮板贵得多,并可能引起模板磨损。