Yes, it’s quite easy to change the print speed settings on the F400. We provide presets (material profile) for each material that correspond to a setting that provides excellent print quality with reasonably quick print times (0.2mm layers, 30% infill, 100mm/s print speed). The customer has the capability to adjust all printing parameters including layer height, infill, speed, and support material generation as needed. There is minimal quality improvement to be gained by running slower than our standard print speed. However, lowering the layer height to 0.1mm will result in better quality output. Some materials such as Bridge Nylon are configured to run slower due to the material’s properties.