Technology

What is the difference between 3-D Printing and Fused Deposition Modeling? ?

I see alot of similarites but both are in 2 different categories of rapid prototyping; so whats the difference? Please someone who has knowledge in the topic of rapid prototype

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1. 3-d printing uses layers of adhesive drawn onto a bed of powder with an inkjet-like head. The work is buried in the powder which is replenished between passes from an adjacent well. FDM uses an extrusion nozzle lay down the layers of plastic or wax. Each layer is built up by laying down beads of heated material, which cools quickly. Unlike processes like SLA, the workpiece is in open air and it doesn't require harsh or messy chemicals. Stereolihography or SLA uses a UV-activated liquid resin. The layers are done by scanning a UV laser on the liquid's surface... they're "drawn" with strokes. The work is in the resin bath during this time. Other processes use inkjet-like technology to lay down the layers. Links below.