Digital Light Processing is a 3d printing process where a projector is used to cure photopolymer resin. Very similar to SLA where the only difference is that instead of a UV laser to cure the photopolymer resin, a safelight (light bulb) is used. Objects are created the same as SLA with the object being either pulled out of the resin which creates space for the uncured resin at the bottom of the container and to form the next layer of the object or down into the tank with the next layer being cured on the top.At Fibrox we uses DLP technology for Silver and Brass 3D printing. We 3D print a wax model first then, we use a lost-wax casting technique: a mould is made around the wax before it is melted and filled with silver, creating your object.
Objects that are printed with Digital Light Processing have less visible layers versus other processes such as FDM/FFF. Compared with SLA, DLP can have faster build speeds due to a single layer being created in one singular digital image whereas with SLA, the UV laser has to scan the vat with a single point (trace out the object layer).Also, the same photopolymer resins that can be used with SLA, can be used for DLP 3D Printing. Objects printed with this process have the same strengths and weaknesses.Similar to SLA, DLP is commonly used to generate highly detailed artwork, non-functional prototypes, and can be used to make moulds in investment casting applications.