×

How to Make a Metal Crossbar Door Lock

Metal crossbar locks provide protection from intruders without a lock and key. Intruders can't pick a crossbar, and pounding on the door not only results in waking the neighbors, but in a sore shoulder. Use metal crossbars to lock sheds, barns or home doors. They give the home the look and feel of wooden or stone crossbars in medieval castles, but with the strength of hard steel.

Steel Bar Measurements

Step 1

Measure the height of the doorway using a tape measure and mark the center with a pencil on the left and right side of the door.

Step 2

Locate the studs of the doorframe on the right and left side of the door. Run the stud finder along the left side of the door, where you marked center, and toward the left until it locates the edge of the stud. Mark the spot with a pencil. Repeat with the right side.

Step 3

Measure the width of the doorway, from mark to mark. Add six inches to the measurement.

Drilling the Holes

Step 1

Place a 3-inch bar on the wood block. Measure 1 inch up from the center of the bottom of the bar and mark the spot with a pencil. Measure 1 inch down from the top and mark the spot with a pencil.

Step 2

Place a dab of cutting oil on one of the marks. Drill a hole completely through the bar using the drill and a steel bit slightly larger than the toggle bolts, so that the toggles fit through the holes. Keep the drill pointing straight down and drill slowly. Repeat with the second mark.

Step 3

Repeat with the second 3-inch bar, drilling two holes.

Step 4

Set a drilled bar on top of a medium-sized bar so that the bottom of the drilled bar lines up with the bottom of the medium bar. Mark the spots for holes by placing the pencil inside the drilled holes and making a mark. Repeat with the second medium-sized bar.

Step 5

Drill the holes in the medium-sized bars.

Installation

Step 1

Place one of the small drilled bars against the left side of the door so that the right side of the bar rests just to the left of the mark on the wall. Mark the place for the bolts using the pencil and holes in the bar. Repeat on the right side of the wall, placing the bar to the right of the mark this time.

Step 2

Drill pilot holes for the bolts in the wall. Use a bit that is slightly larger than the bolts.

Step 3

Place two toggle bolts through the holes of one of the medium bars, then through the holes of the small bar. Pass the bolts through the pilot holes in the wall.

Step 4

Tighten the bolts to the wall using the drill and the screwdriver bit. The drill tightens the bolts securely.

Step 5

Repeat with the remaining bars and toggle bolts on the other side of the door.

Step 6

Slip the long bar into the slots to secure.

Warning

  • No matter how strong the lock appears it is possible to exert enough pressure to break down the door, although it might actually take a battering ram.