# Support Ironing [Mode](option_mode): `Advanced`. [Variable](built_in_placeholders_variables): `support_ironing`. Ironing is using small flow to print on same height of surface again to make flat surface more smooth. This setting controls which layer being ironed. ## Pattern [Mode](option_mode): `Advanced`. [Variable](built_in_placeholders_variables): `support_ironing_pattern`. Select the ironing pattern to use. ## Flow [Mode](option_mode): `Advanced`. [Variable](built_in_placeholders_variables): `support_ironing_flow`. The amount of material to extrude during ironing. Relative to flow of normal layer height. Too high value results in overextrusion on the surface. ## Line Spacing [Mode](option_mode): `Advanced`. [Variable](built_in_placeholders_variables): `support_ironing_spacing`. The distance between the lines of ironing.