The result is a new process and abbreviation to familiarize yourself with, Low Force Stereolithography (or LFS), made up of two key components; a flexible tank and scalable Light Processing Unit ( or LPU). LFS has been designed to reduce the forces exerted on parts during the print process. It achieves this by using a flexible film which bows gradually as the part is lowered, reducing pressure and allowing for light-touch supports which can be easily teared away. Meanwhile, the LPU is made up of lenses and mirrors which provide precisely controlled linear illumination for accurate, repeatable parts. A single galvanometer positions the high-density laser beam in the Y direction, passes it through a spatial filter, and directs it to a fold mirror and parabolic mirror which means the beam is always perpendicular to the build plane as opposed to at an angle.
The Form 3 very similar to the Form 2 in terms of look and build, packaged in familiar FormLabs’ orange with a print volume of 145 x 145 x 185 mm (just a centimetre bigger in height compared to its predecessor) and a laser spot size of 85 microns; it uses the same material cartridges as the Form 2.