Core Drilling 101

Core drilling is only one part of the job for most plumbers, HVAC technicians, electricians, general contractors, and rental customers.

This guide gives you a practical starting point. It covers bit size, wet-coring heat, slurry control, thread fit, basic technique, and bit care. Start with the hole you need. Then match the bit, drill, water plan, and cleanup method before the work begins.

Start with the task

Choose the lesson that matches the problem in front of you.

1. Choosing the Right Core Bit Size
2. Wet Coring, Heat, and Glazing
3. Water Control and Slurry
4. Thread Mounts and Adapters
5. Drilling Technique Basics
6. Bit Care and Recovery

How to use this guide

Treat these articles as a planning playbook. Always follow the drill, stand, and bit instructions for your exact setup.

RDT serves the trades that core-drill as one part of the work. The goal is simple. Help you ask better questions, avoid mismatched equipment, and plan a cleaner drilling task.