There are a few key differences between resin and FDM 3D printing. For starters, FDM 3D printing uses filament that is melted and extruded through a nozzle to create a 3D object. Resin 3D printing, on the other hand, uses a light source to cure liquid resin into a solid object. Resin 3D printing is generally more accurate and detailed than FDM 3D printing. This is because the layer thicknesses of resin 3D printers are generally much smaller than those of FDM 3D printers. Resin 3D printers can also print in a wider range of materials, including clear and flexible materials. FDM 3D printing is typically more affordable than resin 3D printing. This is because FDM 3D printers are less expensive to purchase and operate. FDM 3D printers are also generally easier to use than resin 3D printers. Finally, resin 3D printing generally has a shorter lead time than FDM 3D printing. This is because it is typically faster to cure resin than it is to melt and extrude filament.