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Your Knoxville, Tennessee 3D Printing Service: 3D Prototypes and Production Parts
A Global Leader in Industrial-Grade 3D Printing
Xometry is an industry-leading 3D printing service. Whether you need prototypes or production parts, we can make them for you in as fast as a day. We are your one-stop-shop for accurate, precise custom 3D printed parts at a low cost. Upload your 3D CAD file to get a quote and lead time within seconds. We use the latest additive manufacturing processes to build affordable functional prototypes & end-use parts in over 60 metals and plastics.
We offer eight high-quality 3D printing processes including selective laser sintering, fused deposition modeling, stereolithography, direct metal laser sintering, polyjet, Carbon DLS, binder jet metal, and HP Multi Jet Fusion. We use commercial and industrial-grade printers such as Stratasys Fortus 900mc and Fortus 450 FDM, EOS Polymer Laser Sintering (SLS) and DMLS, Concept Laser, SLM Solutions, 3D Systems, ExOne, and more.
Selective Laser Sintering (SLS) is a powerful 3D printing technology that produces highly accurate and durable parts that are capable of being used directly in end-use, low-volume production, or for rapid prototyping.
An additive manufacturing layer technology, SLS involves the use of a high power laser (for example, a carbon dioxide laser) to fuse small particles of plastic powders into a mass that has a desired three-dimensional shape. The laser selectively fuses powdered material by scanning cross-sections generated from a 3-D digital description of the part (for example from a CAD file or scan data) on the surface of a powder bed. After each cross-section is scanned, the powder bed is lowered by one layer thickness, a new layer of material is applied on top, and the process is repeated until the part is completed.
Download the SLS Design Guide.
Stereolithography (SLA) is a robust 3D printing technology that produces extremely accurate and high-resolution parts that are capable of being used directly in end-use, low-volume production, or for rapid prototyping.
SLA is an additive manufacturing process that focuses an ultraviolet (UV) light on a vat of photopolymer resin. It offers higher resolution printing than many other 3D printing technologies, allowing customers to print parts with fine details and surface finishes. SLA 3D printing is a highly-versatile platform for making custom parts in prototype and production settings; often acting as a stand-in for injection-molded plastic parts.
Xometry offers both standard and high-resolution options for fine detail parts, and can also print larger sized parts and products, with some materials offering up to a 58" inch build area. In addition, Xometry's manufacturing partner network allows us to offer a larger variety of materials than other 3D printing companies - we offer a wide range of both Accura and Somos brand materials.
Download the SLA Design Guide.
Fused Deposition Modeling (FDM) is a 3D printing technology widely known for its speed, accuracy, and competitive cost. A machine precisely extrudes melted plastic filament to create a part. Parts are very rigid, especially compared to Selective Laser Sintering (SLS), which makes them a great fit for projects with a rigidity requirement. Xometry's FDM solution offers large build volumes up to 24″ x 36″ x 36″, a variety of colors, and a diverse selection of production-grade thermoplastics — from ABS to Polycarbonate to Ultem.
Download the FDM Design Guide.
HP Multi Jet Fusion is a new 3D printing technology that produces highly accurate and durable parts that are capable of being used directly in end-use, low-volume production, or for rapid prototyping. Since the process uses well-established 2D printing ink-jetting, it has remarkably fast layer times compared to other powder bed fusion technologies.
Download the HP Multi Jet Fusion Design Guide.
PolyJet 3D is a 3D printing technology known for its customizable material properties and excellent surface finish. It works by jetting UV curable resin onto a build tray in a process that is somewhat similar to inkjet printing. PolyJet 3D printing offers one of the most advanced industrial 3D printing solutions available, producing parts with incredible precision and speed. It also supports a wide variety of build materials including rigid and rubber-like plastics. Xometry's PolyJet solution has a maximum build envelope of 19.3 × 15.4 × 7.9 in. (490 × 390 × 200 mm) in a variety of colors and materials.
Download the PolyJet 3D Design Guide.
Direct Metal Laser Sintering (DMLS) is an 3D metal printing technology that builds prototype and production metal parts from a CAD file using a laser to selectively fuse a fine metal powder in either stainless steel or aluminum materials. A DMLS machine is capable of producing highly complex features and all-in-one assemblies using metal materials that would be difficult to achieve with subtractive manufacturing techniques.
Our DMLS metal 3D printing service typically offers build volumes up to 250 x 250 x 325 mm, but we may be able to accommodate larger part volumes upon request in the quote. (See our Manufacturing Standards for more details) A good first step is to find out the cost of the parts you need using DMLS and compare them to other 3D printing processes and CNC machining.
Download the DMLS Design Guide.
Carbon DLS™ uses digital light projection, oxygen-permeable optics, and programmable liquid resins to produce products with end-use durability, resolution and surface finish. This 3D printing technology is called Digital Light Synthesis™, or DLS for short. Another legacy term for the process is Continuous Liquid Interface Production (CLIP). Along with Carbon’s custom liquid resins, DLS unlocks new business opportunities and product designs previously impossible, including mass customization and on-demand inventory of end-use products.
Carbon bridges, and sometimes substitutes, for processes like Urethane Casting and Injection Molding service production, because the materials are urethane-based or epoxy-based, giving excellent mechanical properties. There are even elastomer and silicone resins that outperform most additive manufactured rubber-like materials.
The typical build area is 7.4” x 4.6” x 12.8”. Parts with dimensions exceeding 4” x 4” x 6” will require manual review.
Download the Carbon DLS Design Guide.
With binder jetting, an inkjet print head quickly deposits a bonding agent onto a thin layer of powdered particles -- either metal, sand, ceramics or composites. This process is repeated, layer-by-layer, using a map from a digital design file, until the object is complete. Binder jetting is offered through our Digital RFQ Marketplace through Xometry's partnership with ExOne.
Download the Binder Jetting Design Guide.