X

We Value Your Privacy

We and our partners use technology such as cookies on our site to personalise content and ads, provide social media features, and analyse our traffic. Click below to consent to the use of this technology across the web. You can change your mind and change your consent choices at anytime by returning to this site.

Update Consent
DISCOVER
×
Loading ...

How to Get a Core Drill Out of the Wall

Updated February 21, 2017

A core drill creates a hole in a surface, larger than standard drill bits. Core drills carve out circles in wood, metal, drywall, masonry and many other surfaces. Fitting pipes through walls and doorknobs through doors are two common reasons for using a core drill. A core drill bit is a cylinder shape with cutting teeth on the top edge and attaches to standard power drills for household use. Heavy-duty core drills are available for large-scale projects such as drilling through thick concrete or natural stone surfaces.

Loading ...
  1. Locate the reverse switch or button on the power drill. Depressing this button or flipping this switch causes the drill to turn counterclockwise.

  2. Turn on the power to the drill.

  3. Allow the core bit to spin counterclockwise for 10 to 15 seconds.

  4. Pull the drill out of the wall slowly so as not to damage the wall. Keep the drill running while pulling the bit out of the wall.

  5. Unplug the drill and disconnect the core bit, leaving it in the wall.

  6. Tap the top, bottom and sides of the core bit with a mallet, gently.

  7. Grasp the core bit and wiggle it side to side.

  8. Pull the bit straight out or wiggle it back and forth and walk it out.

  9. Unplug the power drill and detach the core bit from the drill.

  10. Place a thin chisel or metal putty knife as close to the bit as possible.

  11. Lightly tap the chisel or putty knife with a hammer, moving around the entire bit to loosen the tight fit.

  12. Pull the core bit out of the wall.

  13. Tip

    Avoid stuck core bits in the future by halting drilling 1/8 to 1/4 inch from drilling completely through.

Loading ...

Things You'll Need

  • Mallet
  • Chisel
  • Metal putty knife
  • Hammer

About the Author

Sal Marco began writing professionally in 2009. He has written many online home improvement articles based on his more than 20 years of experience in the home improvement and building industries. He has worked as both part of a team and as a site supervisor. Marco has a Bachelor of Science in management science from Kean University.

Loading ...