使用金属螺丝到地接不是最好的方法。
Using a sheet metal screw for your ground is not the best approach.
失去金属夹的刀片由螺丝和手柄上的夹子固定。
Blades without clips are held by screws and the clamp on the handle.
制作链锯确实无需高深科技，只是用传统的螺丝螺母将塑料手柄和金属链条加以组合。
There is no particularly special technology needed to make a chainsaw. It's really just plastic and metal parts screwed together with old-fashioned nuts and bolts.
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