<human>: Goal: How to cut a wooden gear?

Which of the following methods is more reasonable for accomplishing this goal?

OPTIONS:
- Using the CNC we cut 7mm thin MDF Wood to create the board 128cm X 97cm with holes for gear shafts. Use a 15mm hammer to cut the gears.
- Using the CNC we cut 7mm thick MDF Wood to create the board 128cm X 97cm with holes for gear shafts. Use a 15mm drill bit to cut the gears.
<bot>: Using the CNC we cut 7mm thick MDF Wood to create the board 128cm X 97cm with holes for gear shafts. Use a 15mm drill bit to cut the gears.