Two Solid Pins were used as hinge pins in a styrene case.
The Solid Pins were causing squeaking in the styrene plastic case. The overriding weakness of the Solid Pins was that they relied on deformation of the plastic for retention, adding stress to the host material. It was necessary for the holes to be misaligned to retain the Solid Pins. Pressure caused by the misalignment, and Solid Pins bending, both contributed to squeaking.