How to Make a Cardboard Structure Strong

1. Use thick, corrugated cardboard. The thicker the cardboard, the stronger it will be. Corrugated cardboard is also stronger than regular cardboard because it has a wavy interior that helps to distribute weight.

2. Reinforce the corners. The corners of a cardboard structure are its weakest points, so it's important to reinforce them. You can do this by gluing or taping additional pieces of cardboard to the corners, or by using corner braces.

3. Add supports. If your cardboard structure is going to be tall or heavy, you may need to add supports to help it stay up. You can do this by using wooden dowels, metal rods, or even straws.

4. Cover the cardboard with a protective coating. This will help to protect the cardboard from water, dirt, and wear and tear. You can use a clear sealant, paint, or even contact paper.

5. Let the cardboard structure dry completely. Before you start using your cardboard structure, make sure that it has dried completely. This will help to ensure that it is strong and durable.

Here are some additional tips for making a cardboard structure strong:

* Use high-quality glue and tape.

* Cut the cardboard pieces accurately.

* Score the cardboard along the fold lines before you fold it.

* Be careful not to overload the cardboard structure.

By following these tips, you can make a cardboard structure that is strong and durable, and that will last for years to come.