The lightest 3D printed metal available through T3NDER is Aluminium – AlSi10Mg. This is a casting grade of aluminium which is printed using the Direct Metal Laser Sintering (DMLS) process. Aluminium in powdered form is laid down layer-by-layer on the build platform, between each layer a laser scans across the required cross section, sintering the powder particles together to form a metal structure. 3D Models can be printed with a minimum wall thickness of 1.0mm. Geometry is critical to getting a good surface finish on the model as under-hanging surfaces can be rough. Parts can be polished, heat-treated, ultrasealed and even welded after printing.