The two most common approaches are rubber bands or Metal Band clamps. Apply multiple rubber bands to add more pressure. Metal band clamps are the most popular. They can be purchased in multiple sizes in the plumbing department of most home centers.
Another popular method is the rub joint method where pairs are glued then 4’s, etc. Glue is applied to a joint, the pair of segments are then rubbed together until the joint tacks up holding the pieces together.
