## '''Enable retraction''': this retracts the filament when the nozzle moves from one area to another whilst not printing. It is best to leave this enabled.
## '''Bottom/top thickness''': the bottom and top thickness of the solid layer. This value should be a multiple of the layer height - a value between 0.2mm and 1mm is best for most prints, with 1mm used for very delicate models.
## '''Fill density''': this is the density of the fill inside your model. Due to an excellent calibration of our Ultimaker, almost all prints will require less than 30% fill. 10% for just structural support, 24% for an average print (after 25% Cura slices your model differently), 30% for a solid print of an average sized object. For objects that require superior structural strength, up to 60% is recommended. 80% can be used for very small complex objects, and 100% is used on a case-by-case basis(if you go at 100% on a large solid, there will be too much material and it will be a mess).
## '''Print speed''': this is the speed at which the Ultimaker will print. 100mm/s is recommended for detailed prints, 120mm/s for average prints, and up to 150mm/s for fast, lower quality prints.
## '''Printing temperature''': we have tested and 235°C works best. Leave it as is.