It depends on what you mean by strong. A lot of times, the strength depends as much as the structure that you're printing as it is the material. Most of these o

It depends on what you mean by strong. A lot of times, the strength depends as much as the structure that you're printing as it is the material. Most of these objects are printed hollow. Generally, PLA is stronger against stress, but breaks quickly, whereas ABS is less strong against stress, but bends before breaking.