The drilling of a three blade paddle mixer is for easier use. Regarding the drilling technique of the mixer:
1. Welding tools cannot be used on the perforated branch as it may damage the lining.
2. When drilling holes, residue may fall into the enamel glass mixer, so be careful during operation, otherwise it may cause blockage.
3. Due to the soft lining of the mixer, the drill bit will be damaged and the corners will not be neat. Use a utility knife to make holes.