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Topic: Selective laser sintering

	Selective Laser Sintering (SLS) Information \| SLS Rapid Prototypes \| Rapid Prototyping \| Instant Quotes
		Selective Laser Sintering (SLS) uses a laser to sinter powder based materials together, layer-by-layer, to form a solid model.
		A thin layer of build material is spread across the platform where the laser traces a two-dimensional cross section of the part sintering the material together.
		The platform then descends a layer thickness and the leveling roller pushes material from the powder cartridge across the build platform, where the next cross section is sintered to the previous.
	www.quickparts.com /encyclopedia/sls.asp (236 words)

	- APproto.com - Instant quotes, Quality parts
		Selective Laser Sintering, commonly referred to as SLS, is a 3 –Dimensional printing process that produces durable prototype parts and wax casting patterns from standard 3D CAD files.
		Selective Laser Sintering uses a Co2 laser to sinter layers of powdered material direct from your 3D CAD data.
		Selective Laser Sintering has a moderately coarse surface finish, however additional finishing can be done to achieve a smooth finish.
	www.approto.com /EasyOnline/sls.php (260 words)

	Moeller Design & Development \| SLS \| Selective Laser Sintering
		Selective Laser Sintering (SLS) is a rapid prototyping process used to fabricate 3-D objects.
		The energy added by the laser heats the powder into a viscous state and individual particles bond into a solid.
		Once the laser has scanned the entire cross-section, another layer of powder is laid on top and the process is repeated.
	www.moellerdesign.com /sls.htm (135 words)

	Laser Sintering (Site not responding. Last check: 2007-11-03)
		SLS, or Selective Laser Sintering, is actually a registered trademark of 3D Systems, and their proprietary process.
		Sintering is not as accurate as Stereolithography, that's a given.
		Also, the sintered parts you receive won't have any finishing done to them, so if you're looking for a show-quality prototype for your photo shoot or trade show booth, a better solution is a set of SLA's with a paint ready finish, or urethane castings.
	www.protogenic.com /Laser_Sintering.aspx (689 words)

	Selective Laser Sintering (SLS) using Powder Sinter and Fuse RP Technology \| Xpress3D
		SLS (Selective Laser Sintering) – Process using a CO2 laser to sinter or fuse a powder material.
		The SLS method uses finely ground powders that are sintered by a laser to generate parts.
		The drawback to SLS however is that the parts have a rather porous surface finishes due to the sintering nature of the technology.
	www.xpress3d.com /SLS.aspx (406 words)

	Selective Laser Sintering (SLS) - ProtoCAM's SLS prototype services (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-11-03)
		Selective Laser Sintering (SLS) is a process by which ProtoCAM creates 3D SLS prototypes by fusing or sintering powdered thermoplastic materials or metals to form functional prototypes.
		Rapid prototype (RP) laser sintering can provide a competitive edge in your product development by producing rapid plastic or metal SLS prototypes with complex shapes that closely resemble injection-molded parts.
		In the Selective Laser Sintering (SLS) process, three-dimensional parts are created by fusing (or sintering) powdered thermoplastic materials with the heat from an infrared laser beam.
	www.protocam.com.cob-web.org:8888 /sls_materials.html (330 words)

	Producing Metal Parts with Selective Laser Sintering/Hot Isostatic Pressing
		Selective laser sintering/hot isostatic pressing is a hybrid direct laser fabrication method that combines the strengths of both processes.
		Selective laser sintering (SLS) is an SFF technique that creates 3-D freeform objects directly from their computer-aided design (CAD) models.
		A component is produced by selectively consolidating a metal powder layer by layer with a laser beam.
	www.tms.org /pubs/journals/JOM/9812/Das-9812.html (2513 words)

	Rapid Prototyping with Selective Laser Sintering (SLS)
		Selective Laser Sintering creates solid, three dimensional objects by fusing powdered materials with a CO2 laser.
		An initial cross-section of the object under fabrication is selectively 'drawn' on the layer of powder by a heat generating C02 laser.
		The interaction of the laser beam with the powder fuses the powder particles to form a solid mass.
	www.peridotinc.com /SLS.html (323 words)

	SELECTIVE LASER SINTERING (Site not responding. Last check: 2007-11-03)
		Five years later, 4 SLS machines are producing plastic parts of a constantly increasing size and for an evergrowing range of applications.
		Selective Laser Sintering can be used in every stage of the product development cycle, from the production of one-shot models to functional test parts, to series of components.
		The PA material Materialise is using is certified as biocompatible, foodsafe and not harmful to health or the environment.
	www.materialise.com /prototypingsolutions/laser_ENG.html (178 words)

	[No title]
		Selective Laser Sintering (SLS) is a form of rapid prototyping developed Carl Deckard for DTM Corporation (3D systems) in 1986.
		A CO2 powered laser then heats the material to a melt point so that the layer being built is bonded to the layer below.
		Selective Laser Sintering can be used in conjunction with other processes to produce parts as well.
	www.engr.ku.edu /~rhale/ae510/websites_f02/SLS.doc (1249 words)

	How Does Selective Laser Sintering (SLS) Work?
		A computer controlled carbon dioxide laser scans a cross section of the 3D solid model (described in the CAD file).
		As the laser draws the cross section, the powder contacted by the laser is fused together, without actually melting the powder, forming a thin layer (typical 0.004”).
		A new layer of powder is deposited and the process of laser sintering and spreading powder is repeated until the 3D object is complete.
	www.rapidsolutions.com /pages/slsbottom2.htm (144 words)

	104. : Selective laser sintering of alumina
		In the second approach the Selective Laser Sintering (SLS) process is used to prepare samples from Al(sub2)O(sub3)/polymer binder powders.
		Parts made in any particular laser scanning mode show optimum values for strength and density as the laser energy density is systematically increased from 2-8 cal/cm(sup2).
		Some of the SLS fabricated bars were infiltrated with colloidal alumina, fired to remove the binder, and sintered at 1600 deg C to achieve alumina bars with 50% relative densities, interconnected porosity, and strengths between 2 and 14 MPa.
	home.att.net /~edgrenda2/d00/d00_104.htm (513 words)

	Selective Laser Sintering (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-11-03)
		Laser Sintering, short for Selective Laser Sintering (SLS®) is a rapid prototyping and short run rapid manufacturing process.
		This cross sectional data is then sent to the selective laser sintering machine to selectively guide the laser beam over a correspondingly thin layer of powdered material including polymers (nylon, also glass-filled or with other fillers, and polystyrene), metals (steel, titanium, alloy mixtures and composites) traditional waxes, and foundry sand.
		Laser Sintered master models can also be used for "master patterns" when it comes time for metal castings and are easily modified to accommodate any last minute changes.
	lasersintering.com.cob-web.org:8888 (396 words)

	Selective Laser Sintering (SLS)
		Selective Laser Sintering (SLS) is a free-form fabrication technology developed by the 3D Systems.
		It is a layered manufacturing method that creates solid, three-dimensional objects by fusing powdered materials with a CO2 laser.
		A thin layer of powder material is laid down and the laser “draws” on the layer, sintering together the particles hit by the laser.
	www.padtinc.com /rm/sls/default.htm (140 words)

	Selective laser sintering (Site not responding. Last check: 2007-11-03)
		Offered similar training selective laser sintering camp near salman pak was overrun by american intelligence selective laser sintering community.
		Was unable to believe that american selective laser sintering special plans selective laser sintering was forced selective laser sintering to the I. How we know what isnt so the side of political philosophy, and became one of special plans.
		Selective laser sintering overemphasizing the nationalsecurity threat made it more than thirty.
	selective.vesterpro.net /selective-laser-sintering.html (731 words)

	Stereolithography (SLA) \| Selective Laser Sintering (SLS) \| Fused Deposition Modelling (FDM)
		Using Stereolithography (SLA), Selected Laser Sintering SLS or Fused Deposition Modelling FDM for prototyping allows design ideas to be produced in a realistic form enabling designers and engineers to see and touch component parts, without a huge financial outlay.
		The other beauty of Fused Deposition Modeling (FDM), Stereolithography (SLA) or Selected Laser Sintering (SLS) models is that they can be available quickly, a typical turn round time frame is about one week from receipt of 3D CAD data.
		Having produced the Stereolithography (SLS), Selected Laser Sintering (SLA) or Fused Deposition Modeling (FDM) model, it is a quick step to apply a suitable surface finish and produce silicone tooling from which small numbers of vacuum castings can be made in a range of PU resins with properties to suit your needs.
	www.prototypeparts.co.uk (333 words)

	Dr. Yuwen Zhang : Research (Site not responding. Last check: 2007-11-03)
		This project involves state-of-the-art, fundamental modeling of the laser beam-material interactions associated with Selective Laser Sintering (SLS) of single and multiple components metal powders.
		The liquid phase sintering of single and multiple components metal powders, as well as by Selective Laser Powder Remelting (SLPR) of single component metal powder are been modeled.
		Three-Dimensional Simulation of Selective Laser Sintering of a Two-Component Metal Powder Layer with Finite Thickness,” ASME J.
	www.missouri.edu /~zhangyu/Research/CW_SLS.htm (219 words)

	Selective Laser Sintering,SLS
		SLS - Selective Laser Sintering prices are generally lower than SLA modelling due to the reduced post finishing required from this powder based system.
		It's light weight, high UTS characteristics, excellent surface finish, and resistance to wear, compared to standard SLS(Selective Laser Sintering) Duraform and SLS GF Duraform, also lends the technology to the low-volume direct manufacture of parts for race cars and motorcycles, without the weight penalty.
		Due to its higher cost per kilo however, and the fact that the powder cannot be reused, unlike standard SLS (Selective Laser Sintering), Windform XT is expected to be used for specialist applications and not for general RP use.
	www.crdm.co.uk /services_selective-laser-sintering.htm (425 words)

	Selective Laser Sintering (via CobWeb/3.1 planetlab2.cs.unc.edu) (Site not responding. Last check: 2007-11-03)
		A laser beam is then traced over the surface of this tightly compacted powder to selectively melt and bond it to form a layer of the object.
		Since the objects are sintered they are porous.
		It may be necessary to infiltrate the part, especially metals, with another material to improve mechanical characteristics.
	home.att.net.cob-web.org:8888 /~castleisland/sls_int.htm (354 words)

	Selective Laser Sintering
		Selective Laser Sintering converts 3 dimensional CAD data into Nylon or Steel parts.
		Using a computer controlled laser the powder is cured and bonded layer by layer.
		Each layer is built on top of the other on a platform that lowers into a container, powder is reapplied each time by a roller.
	www.generalpattern.com /sls.htm (146 words)

	selective laser sintering, sls
		SLS technology utilises a CO2 laser to fuse or melt together the fine nylon powder in 0.1mm layers.
		The laser is guided by a computer controlled mirror whose data is fed from an stl.
		The Build Platform and the model gradually step downwards by the layer thickness, as the Delivery Chambers alternately rise to provide a fresh charge of powder for the roller to accurately spread over the Build Area.
	www.crdm.co.uk /technical_sls.htm (95 words)

	Coloured Selective Laser Sintering (SLS)
		The process uses a fine powder which is heated with a CO laser so that the surface tension of the particles is overcome and they fuse together.
		Before the powder is sintered, the entire bed is heated to just below the melting point of the material in order to minimise thermal distortion and facilitate fusion to the previous layer.
		The MEC has three selective laser sintering machines from 3D Systems (DTM Corp.) Sinterstation 2000, 2500CI and 2500Plus (Fig.1) with Build Chamber Dimensions of 381mm(width) x 330mm (depth) x 457mm(height) for making plastic prototypes and CastForm patterns.
	www.mec.cf.ac.uk /services/?view=sls&style=plain (325 words)

	Selective Laser Sintering SLS machines SLS process patterns prototypes prototyping 3D-CAM Product Development (Site not responding. Last check: 2007-11-03)
		The latest generation of Selective Laser Sintering (SLS) machines has given 3D-CAM Product Development an additional avenue for generating patterns and prototypes.
		Selective Laser Sintering, SLS, converts the data into 2 Dimensional cross-sections or layers that are each sintered together on a platform as an additive process.
		The process is fast and parts can be nested to maximize economy, delivering a service far superior to those relying on traditional prototyping or pattern cutting processes.
	www.3d-cam.com /services/sls.asp (208 words)

	Laser Sintering (Site not responding. Last check: 2007-11-03)
		Selective Laser Sintering (SLS) is a well known procedure for rapid tooling/prototyping.
		In cooperation with the Institute of Metal Forming at ETHZ we started a feasibility study to evaluate the SLS sinter process for manufacturing high strength and high precision tools for metal forming processes.
		After a final surface treatment of the surface we reached a surface rougness of approximately 15 m.
	www.ifm.ethz.ch /research-98/html/Imp-32.html (277 words)

	IngentaConnect Comparison of direct and indirect selective laser sintering of po... (Site not responding. Last check: 2007-11-03)
		Comparison of direct and indirect selective laser sintering of porous apatite mullite glass ceramics
		The feasibility of using the layer manufacturing technique of selective laser sintering (SLS) for the fabrication of custom made bioceramic bone implants has been investigated.
		However, the processing window and coherence of the indirectly sintered components was considerably greater than those produced by the direct route.
	www.ingentaconnect.com /content/sgt/gt/2004/00000045/00000002/art00014 (220 words)

	Rapid Prototyping - Laser Fusion and Selective Laser Sintering
		The most advanced laser fusion technique is the commercial selective laser sintering (SLS).
		A laser beam scans the surface defining the regions to sinter, fusing the polymer and bonding the particles.
		Higher powered (>50W) lasers can be used to sinter powders directly without the need for a polymer binder.
	www.azom.com /details.asp?ArticleID=1648 (352 words)

	rapid prototype development uk
		As the level of finishing is directly related to component cost it is important not to over specify the requirement.
		Frequently the optimum is to select different parts to different grades of finish.
		For example, a batch of 50 parts could be split into 2 for assembly and aesthetic review (Grade 1), 5 for general assembly and review (Grade 2) and 43 for trials (Grade 3 or 4).
	www.3trpd.co.uk /services.htm (1120 words)

	Selective Laser Sintering : Astro Manufacturing
		For prototypes or models that require durability and high heat deflection temperature, Astro offers selective laser sintering services that quickly and cost effectively create parts from your 3-D files.
		Selective laser sintering (SLS) uses a CO2 laser to fuse powder-based materials together, layer-by-layer, creating a solid object within hours.
		Sintered prototypes are perfect for functional testing of almost any application, and they closely represent the physical properties of the production material.
	www.astromodel.com /Services/Prototyping/Rapid_Prototyping/Selective_Laser_Sintering/default.html (204 words)

	On Demand Manufacturing - - Selective laser sintering technology that is changing the way manufacturing is done today. ...
		On Demand Manufacturing - - Selective laser sintering technology that is changing the way manufacturing is done today.
		On-Demand Manufacturing is the only company in the world established specifically for the rapid manufacture of structural components using layer-build technology.
		The ODM Engineering staff selects and tailors the optimum manufacturing process for each individual product using proven ODM proprietary processes and know-how.
	www.odm.bz (173 words)

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