How to Install a Dummy Door Knob on a Pre-Bored Door

Choose your dummy doorknob. If you choose one that has a base plate that covers the entire bored hole, you can simply screw it to the door, covering the hole. If your knob does not cover the hole, go on to Step 2.

Fill the pre-bored hole in the door with Bondo, Wood Bondo or wood putty using the putty knife. If your door is going to be painted, Bondo products are a great choice. If your door is stained, choose the wood putty instead. Ask your home improvement store for help if you are unsure as to which product is the best choice for your application.

Let the Bondo or putty dry per package directions.

Sand the Bondo or putty until smooth.

Paint or stain your patch to match the rest of the door.

Install the dummy doorknob.