We consider a lower weight better because lighter devices are more comfortable to carry. A lower weight is also an advantage for home appliances, as it makes transportation easier, and for many other types of products.
Printers based on fused deposition modeling (FDM) use a thermoplastic filament, which is heated to its melting point and then extruded through a nozzle, layer by layer, to create the object. One of the main advantages of printers based on FDM is that they work with a wide range of materials.
The maximum temperature at which the device can perform to the optimal level.
Printers based on stereolithography (SLA) use a tank of liquid photopolymer resin and a high-powered light source, which is used to harden the material in the tank, one cross section at a time, until the object is created. Printers based on SLA usually have high printing speeds and can produce objects with a smooth finish.
Printers based on selective laser sintering (SLS) use a powerful laser to heat and fuse plastic, metal or ceramic powder particles together, layer-by-layer, to form a solid model. The main advantage of SLS printing is that it can produce objects with complex geometries, using a wide variety of materials.
The height represents the vertical dimension of the product.
The width represents the horizontal dimension of the product.
The thickness (or depth) of the product.
Volume is the quantity of three-dimensional space enclosed by the product's chassis or, in simpler terms, the space the product occupies.