Some objects are difficult to produce with a 3D printer because they have overhanging parts, but a technique that uses lasers could offer a solution
A 3D printer that uses lasers to build up an object in any order, rather than layer by layer, could produce more advanced designs than is currently possible.work by depositing layers of a plastic filament from a nozzle or by curing layers of resin with UV light. In both cases objects are built up one layer at a time, meaning that overhanging parts of a structure – the outstretched arms of a model human, say – must be propped up by temporary supports until printing is complete.
“Because our resin is self-supporting during the printing process, we don’t need to print any supports, making post-processing of the parts much simpler,” he says. “Because we aren’t confined to this layer-by-layer process, we can print structures such as overhangs which are traditionally challenging. This is a brand-new technology, and we are just starting to scratch the surface of what it’s capable of.
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