SI was commissioned to produce a replica ram from a sample. This ram operates and pressurises the door on an autoclave. The existing ram rod had fractured at the external thread, due to cyclical stresses across its life. The downtime of the machine proved costly for the customer, so SI modelled the ram, and produced the replica shown here. This ram had multiple interesting features, including a burst valve for safety, tube inserts to provide cushioning, and assembly did not require a welding process.