Several 3D printing and additive technologies, such as the powder bed and stereolithography technologies, primarily build solid objects. The benefits of solid objects are that they are usually strong and resistant to breakage.

But they are also costly because of the amount of material used to build them. Another potential drawback is that excess material trapped inside the printed object could deform it. In some cases, fully dense, solid parts are not needed for the intended function. There are ways to alter a design so that it is not solid. Not only will less solid parts save money on material usage, they will also be built faster, allowing designers to iterate their designs more quickly. One of the techniques used to create non-solid parts is hollowing. Hollowing is simply adding escape holes in the design to enable any trapped powder or resin to leave the built object. In some […]

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