Which tool is used to drill accurate holes in wood, metal and plastic?

Which tool is used to drill accurate holes in wood, metal and plastic?

• A. Twist drill bit
• B. Angle grinder
• C. Hacksaw
• D. Polishing or buffing machine

Answer: (A)

The key idea is choosing the right cutting tool to make round holes with good accuracy in different materials. A twist drill bit is the standard tool for drilling holes because its sharp point starts the hole cleanly and its helical grooves carry away the chips, helping keep the hole straight as it cuts. With the right type of bit for the material (wood, plastic, or metal) and proper speed, feed, and support (like a drill press or guiding jig), you can produce accurate, round holes consistently. The other tools shown aren’t designed for drilling holes: an angle grinder grinds and cuts, a hacksaw slices through material, and a polishing or buffing machine finishes surfaces. So for accurate holes across wood, metal, and plastic, a twist drill bit is the best choice.

The key idea is choosing the right cutting tool to make round holes with good accuracy in different materials. A twist drill bit is the standard tool for drilling holes because its sharp point starts the hole cleanly and its helical grooves carry away the chips, helping keep the hole straight as it cuts. With the right type of bit for the material (wood, plastic, or metal) and proper speed, feed, and support (like a drill press or guiding jig), you can produce accurate, round holes consistently. The other tools shown aren’t designed for drilling holes: an angle grinder grinds and cuts, a hacksaw slices through material, and a polishing or buffing machine finishes surfaces. So for accurate holes across wood, metal, and plastic, a twist drill bit is the best choice.