The shell and earmould are made in layers, polymerising section by section with a low-viscosity photo-actionable resin using a laser beam. The well-founded partnership between constructors of stereo lithographic systems and resin producers has allowed stabilising high performance photopolymers, which optimise these features to give the guaranteed ONELASER results.

With an automated system of 3D exploration the ear impression goodness remains basic for the good result of the scanning and of consequence of the shell or earmould. For this reason first of all CRAI executes the quality control to verify the product conformity, aimed to drastically eliminate any defect originated from the source. These devices use laser technology and are very effective when asymmetries and curves are involved. Once the print has been explored, the scan data (measurements, shapes, curves) are imported to a file ready for use.

With the specific software, the surface of the scanned model is immediately optimised in 3D and any problems are corrected. The details of the order (buyer code, customer code, clinical data, any other hearing aids and electronic components) are immediately assigned to the 3D digital duplicate. Through a simulation process, the system can incorporate virtual FACEPLATES and immediately display the geometric definition of the various electronic components. The software automatically makes the first placing of these components, checking for any possible collisions. When the model has been moulded in this manner, it can be displayed in the patient’s ear. CRAI has migrated all the knowledge of its staff into the most modern 3D modelling system that is available on the market today … and it has proved to be a winning bet! Today, the experience of years’ manual work is available in 3D.

Using photopolymers and the processed data, the shells and earmoulds are directly made by overlaying layers that are polymerised by the laser with the stereo lithographic process, a 3D moulding technique. The high quality level and standardised process mean the finished product has all those important conformity guarantees to drastically reduce any disturbance and do everything possible to ensure total customer satisfaction.