Can you tell me what hand tools are punched on the instrument box? No electric drills
There is a special hole opener, which any electrician is aware of.
Carbon steel plate and not thick, it is recommended to use a small flashlight drilling hole, you can take measures to prevent earthquakes, for example, the internal use of wood lining, the location of soft materials (foam, etc.).6mm so small, only can use an electric drill, anti vibration is minimal, mechanical punching other is estimated to be a bit of trouble.The hydraulic opener is certainly not available! First of all, there is no such small mold; secondly, with hydraulic openings, we have to start with a small hole in the mold before we can put two pieces of cutting tools together to open holes. And the hydraulic opener is more expensive.Other cutting tools also need electric drills to drive them. Same reason.
Not the kind of drill with drill bit, it is operated by hand. There are two moulds up and down. But 6mm did not die, you still use a drill, less than 1mm thick good open, you can use the speed motor, is to use the awl can pierce the first tie a proper hole, and then slowly rest, neither shaking and do not spend money.
