Of course, it is easier to drill holes during gas cutting, but it is also more troublesome for larger workpieces. Generally speaking, 30 mm plates can be easily cut through without drilling. If you feel that the 30-degree cutting gun is not easy to use, you can choose 100 cutting gun to cut holes. The specific steps are as follows: preheat when cutting, when the point reaches the melting point, the gun nozzle tilts 25 to the right and oxygen is supplied at the same time. It is observed that when the cutting hole melts, the nozzle slowly moves about 10 mm in the direction of the body, that is, there is room for molten iron to buffer. Be sure to have enough oxygen, wear goggles to prevent yourself from being burned, and raise the nozzle slightly after the molten iron melts to avoid tempering. Good luck with your work.