Stronger food and drinking water resilience through 3D printing of spare parts

The project investigated how to identify suitable spare parts, potential time savings, which printing materials work for food and drinking water production, and whether there might be legislative obstacles. RISE carried out case studies on five spare parts with different technical functions: 3D-printed water filters, dishwasher lids and aeration nozzles* made of plastic, as well as repaired and manufactured metal knife blades. 

 – We saw in the project that 3D printing of spare parts is a potential contingency measure that can save both time and resources, and that the regulations for material approval should be reviewed to increase contingency options in crisis situations. Another conclusion is that the expertise and testing and demonstration infrastructure we have at RISE are important resources, says Emma Mattisson, project manager at RISE. 

The authorities now wish to continue exploring the possibilities of 3D printing as a way of strengthening preparedness in both food and drinking water production and other areas. 

– What we have seen is that a great deal of time can be saved by 3D printing spare parts. This is particularly true if companies prepare by identifying and scanning critical spare parts in advance. There is both expertise and equipment for 3D printing in Sweden that can be utilised, says Susanne Norén, Head of Unit at the Swedish Food Agency. 

– An interesting finding is that several of the spare parts that could be suitable for printing are also used in other process industries. This opens up the possibility for more sectors to benefit from the results, says Annelie Almqvist, an investigator at the Swedish Civil Contingencies Agency who has participated in the project. 

However, although 3D printing may be a way of manufacturing and repairing spare parts when supplies are disrupted during crises and wars, there are several challenges. 

– At present, there are few printing materials that we know for certain are safe for use in contact with food and drinking water; further testing is required here. We also need to look more closely at the regulatory framework. But if war were to break out today, we could manufacture using the materials already available, says Susanne Norén. 
*At the bottom of the water treatment tanks are aeration nozzles that blow bursts of air into the sand filter at regular intervals. They are barely visible, but are crucial to prevent the filter from clogging and to ensure the water is purified properly. 

Press contact:  

Maria Delombre, RISE, maria.delombre@ri.se