In the shelters, this pvc and cloth are the most chewable thing, and they will try to chew it. 1 Using a corner piece, put one short and one long pipe into 2 of the 3 holes 2 Once the frame is built, use a hammer to on each corner to firmly hit each side to force the legs into the corner pieces, do not worry about hitting too hard, the pvc is strong 3 Insert 4 legs into holes, turn bed over and hit