Things You'll Need
White glue
Dowels
Hacksaw
Craft knife
Foam
When reinforced, cardboard can be a surprisingly versatile and strong material. The desire to recycle materials has resulted in a move to create household items and furniture from cardboard. Whether you are creating a playhouse, banner, prop or model, cardboard can be your environmentally friendly material of choice. Depending on the project, there are several ways to reinforce cardboard to make it stronger.
Cardboard Sandwich
Step 1
Cut the cardboard to size and lay it down on your work surface so that the corrugation runs horizontally. Coat one side with white glue.
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Step 2
Cut a matching piece of cardboard with the corrugation running vertically.
Step 3
Sandwich the two pieces of cardboard together with the glue between. Leave it to dry.
Dowel Reinfocement
Step 1
Purchase dowels that are an appropriate diameter and length for your craft project. Cut them to size using the hacksaw.
Step 2
Cover one side of the dowel with white glue.
Step 3
Stick it to the back of the cardboard. This is particularly good for bits of cardboard that branch off from the main body of the piece.
Foam Sandwich
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Step 1
Cut two pieces of cardboard that are the same size.
Step 2
Cut a piece of foam the same size as the two cardboard pieces. Cover one side of the foam with glue and stick the cardboard over it. Leave it to dry.
Step 3
Do the same with the other side so that you have foam in the middle of two pieces of cardboard.