How to Make Wine Stoppers Out of Glass Knobs

Place the knob inside the bottle with the screw end down and inside. Look to see how far down the screw goes inside the bottle. Note whether the screw extends past the neck of the bottle; if so, it will need to be trimmed, so mark it with a permanent marker at a point still inside the bottle neck (check it by inserting it again).

Trim the knob at the point you marked with the oscillating power tool and metal cutting wheel.

Mix about two tablespoons of the plumber's epoxy according to the manufactuere's instructions; this quantity will vary according to how long your knob is and how wide the mouth of the bottle. If the putty sticks to your fingers as you work, dip them in cool water.

Sculpt the putty around the screw on the glass knob. Form a cone shape with the tip of the cone extending just beyond the end of the screw and reaching up to touch the base of the glass knob. Make the cone wide enough to fit comfortably inside your bottle, but not fall through; this will not be an exact size and shape, but strive to make the cone as smooth and symmetrical as possible.

Hold the stopper by the glass knob until the epoxy putty has set to hardness.

Measure the full length of the side of the cone from the bottom to the flat top.

Draft a circle shape on the cork with a radius the same length as the height of the putty cone.

Cut out the cork circle. Cut a line from the outside edge of the circle to the center point.

Wrap the cork shape around the putty cone. Trim it to fit and cover the sides of the cone.

Coat the putty cone in a thin layer of silicone glue using the craft stick. Wrap the cork in place and press firmly.

Let the silicone adhesive cure for 24 hours before using the stopper.