How to build a cardboard kayak for less than 40$ (Updated with template)

Step 6 Lay out the first layer

Put down all the cardboard you just cut, and masking tape it together. You don't need to go crazy with the tape, just enough to keep the sheets together. Once you have your first layer laid out, cut enough cardboard for another layer, but this time with all the grain in the cardboard going the other direction (perpendicular to the layer below it) and lay that one out on top of the first one, just to make sure it fits.