Rebating is whereby a step is routed in the side of the material (usually acrylic or foam PVC), which allows for a join between two panels to be made. It can be used to join two pieces of material together to produce a larger sheet or to create a stronger corner joint rather than rely on glue alone.
Materials need to be at least 5mm thick in order for a rebate to be introduced.

It is advisable not to have a rebate in clear acrylic, as the connecting lip will no longer have a crystal clear finish after being machined. Opal acrylics and solid colours produce the best results for any POS or display requirements.

Note: Aluminium composite cannot be rebated.