SLS (Selective Laser Sintering) or LS (Laser Sintering) is ideal for creating parts in actual Nylon or Glass filled nylon.
These plastic parts in most cases are used in DDM (DIrect Digital Manufacturing), partly due to the speed in which the process can create multiple pieces at one time, as well as, the strength and thermal resistance the parts offer.
Once completed, the excess powder (used to support the part during the build) is simply shaken or blown off the final piece. The part may be used as is, or further processed with a sealant for water or air tight applications. It is not uncommon (like with the FDM process) to find parts produced in these high heat deflection materials, in the engine bay of a vehicle for testing.
Great for; DDM, fit and function models that do not require an ultra smooth surface. Parts can be dyed and are also available in an EX material (white or black) which is superb for snap fits, tabs or living hinges larger than 0.050".
Chemical resistence & excellent heat deflection for parts that also require durability.
Because many parts can be stacked vertically during a build, SLS and LS are both optimal methods for producing large batches of parts in one production run.
Parts can be extremely inexpensive when ordered in large quantities.
SLS; EX offers a fantastic living hinge and creates a nice durable, yet somewhat flexible, rigid part.
Glass Filled (GF) Nylon is the most common material choice , but non filled is available.
Great for; DDM, fit and function models that do not require an ultra smooth surface.
Typical Lead-times are 3 to 6 days.
SLS models can be built up to: 22" x 22" x 18" (550mm x 550mm x 460mm). Larger models of virtually any size, can be sectioned and assembled upon completion.
Layer Thickness: 0.004"
LS models can be built up to: 27.6" x 15" x 22.9" (700mm x 380mm x 580mm). Larger models of virtually any size, can be sectioned and assembled upon completion.
Layer Thickness: 0.004" - 0.006"
SLS & LS: Accuracy: +/- .005" for the first 5 inches, +/- .001" inch per inch thereafter.
Slightly gritty surface with faint layer lines & average text. Warping can be an issue on larger flat parts, or parts positioned near the edges of the build chamber.
|DuraForm GF Nylon: A glass filled nylon plastic, used for functional testing and DDM. Natural White|
|DuraForm PA Nylon: A nylon plastic, used for functional testing and DDM. Natural White|
|DuraForm EX: Rigid plastic that is ideal for functional living hinges. White or Black|
|Windform XT: Carbon based composite which has excellent mechanical characteristics. Black|
- SLS/LS instead of Polyjet
- SLS/LS instead of FDM
- SLS/LS instead of Urethane Castings
SLS/LS offer a much higher heat deflection, chemical resistance and durability. Parts can be bonded fairly well and are produced using actual plastics.
For Large quantities of medium & small parts, SLS/LS parts can be considerably less expensive. EX offers a far superior living hinge to anything FDM can offer. Large gear teeth and tabs (built vertically) can be more durable in SLS/LS.
Better leadtimes on medium to large quantities of parts. Certain materials are accepted and popular among aerospace communities.
Most SLS/LS parts are shipped with the support material blown or shaken off upon completion.
Parts can be sealed for water and air tight testing.
Parts can be dyed.
Painting; Once sealed, can be, primed, sanded and painted to match a color chip or specific Pantone color.
Shielding; Parts can be sprayed with an EMI shield or static dissipative coating.
Available metal coatings; vacuum metallizing, painted chrome (with different tints available) & electroplating in nickle, polished or unpolished. Call if a custom metal "look is required".