1. IPC-2222
Assembly and Test
Palletization of parts is a standard process in many instances for both test and assembly. This can be achieved using a number of different techniques. These include simple scoring, a combination of routing and scoring, and a combination of routing plus breakaway.

2. IPC-2222
Assembly and Test
Scoring is the machining of a shallow, precise V-groove into the top and bottom surfaces of the laminate. It is generally accomplished using CNC equipment. As scoring allows the removal of rails and individual parts from a pallet, positional accuracy is critical. See Table 5-2 and Figure 5-2 for some standard scoring parameters.

3. IPC-2222
Assembly and Test
Routing is the process of profiling a pallet or printed board to the correct dimension using a cutting bit. This can be performed either by the use of a pin router and template, or a CNC routing machine.

4. IPC-2222
Assembly and Test
Frequently a combination of routing and scoring is used, where both pallet and printed board are routed, leaving a small connection bridge. This bridge is then scored to facilitate removal following test and assembly.
The final method involves the use of routing and drilled breakaway tabs. Instead of scoring, a series of holes are drilled in the tab to facilitate removal.