Here’s a breakdown of the steps:
- Preparation: A person holds a standard metal hinge, which has several screw holes. The hinge is then placed on a piece of light-colored wood.
- Creating a Pivot Point : A small nail is inserted into one of the hinge’s screw holes. The nail is then lightly tapped with a hammer, creating a small, precise indentation in the wood. This indentation will serve as the center point for the circles.
- Marking the First Circle : The nail is removed, and a red paint marker is used. The tip of the marker is placed against one of the hinge’s edges, and the hinge is rotated around the pivot point created by the nail, drawing a perfect red circle on the wood.
- Marking the Second Circle : The process is repeated, but this time the marker is placed against a different edge of the hinge (further out from the pivot point), creating a larger, concentric red circle around the first one.
- Result : The hinge is removed, revealing two perfectly drawn concentric red circles on the wooden surface, centred around the initial nail indentation.
This technique is useful for woodworking, crafts, or any project requiring accurate circular markings without a compass.