What Can I Do If The Core Drill Bit's Core Won't Come Out?

The core drill bit's core may be stuck or trapped inside the casing. Here are some possible solutions:
1. Use a needle or thin wire to gently push the core bit loose where it's stuck, allowing it to move.
2. Place the core drill bit in a container of water and press down on the core with your fingers to see if that loosens it.
3. Place the core drill bit in pliers and gently tap the core to help it loosen.
4. Use a needle or small tool to gently disassemble the core drill bit's casing, remove the core, and reassemble it.
It's important to note that before trying these methods, you should first determine where the core is stuck in the casing to avoid damaging the core drill bit. If this doesn't resolve the problem, it's recommended to contact a professional repairman or purchase a new core drill bit.