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Custom Profiles: Rafts

    "doRaft"

    True/false

    The "doRaft" setting determines whether or not your toolpath will include a raft. If "doRaft" is set to "false," all raft-related settings will be ignored. 

    "doMixedRaft"

    True/False

    "doMixedRaft" is used to determine how rafts are printed on MakerBot 3D printers with dual extruders. When "doMixedRaft" is set to "true," any given portion of an object's raft will be printed by the same extruder as the part of the object that it touches. That means that on a dual extrusion print, different parts of the raft may be printed by different extruders, while on a single extrusion print, the raft will always be printed by the same extruder as the object. When "doMixedRaft" is set to "false," the extruder specified in the "defaultRaftMaterial" setting will be used to print the entire raft. Setting "doMixedRaft" to true is equivalent to selecting "Color-Matched" from the Raft drop-down menu in the Settings dialog.

    "defaultRaftMaterial"

    Integer, [0,1]

    This setting determines the default extruder used to build rafts. This setting is only used when "doMixedRaft" is set to "false." On a machine with dual extruders, 0 is the right toolhead and 1 is the left toolhead. On a machine with a single extruder, the single toolhead is 0.

    "raftBaseAngle"

    Degrees

    Determines the orientation of the raft's base layer. This is set at a 45 degree angle by default so that the thinner extrusions of the interface layer will not fall through the gaps in the base layer.

    "raftBaseDensity"

    Decimal, [0,1]

    Each base layer forms a series of rows of zigzagging lines. A base density of 1.0 will result in a solid base layer, with each new line segment printed directly alongside the previous one. A lower density will result in more widely spaced lines.

    "raftBaseLayers"

    Integer, [0, infinity]

    This setting determines how many base layers are printed as part of your raft.

    "raftBaseRunGapRatio"

    Ratio

    This setting determines the size of the gap between the rows of zigzagging lines that make up the base layer of the raft. Multiply the width of the base layer extrusion by the value set here to get the size of the gap. A gap that is too large might let parts of the interface layer fall through the base layer. Not having a gap could cause the base layer of the raft to warp.

    "raftBaseRunLength"

    Millimeters

    The raft base is made up of rows of zigzagging lines. This setting determines the width of these rows.

    "raftBaseThickness"

    Millimeters

    This setting defines the layer height for the base layer of the raft.

    "raftBaseWidth"

    Millimeters

    This setting defines the extrusion width for the base layer of your raft. 

    "raftInterfaceAngle"

    Degrees

    Determines the orientation of the raft's interface layers.

    "raftInterfaceDensity"

    Decimal, [0,1]

    Each interface layer forms a series of connected, zigzagging lines. An interface density of 1.0 will result in a solid interface layer, with each new line segment printed directly alongside the previous one. A lower density will result in more widely spaced lines.

    "raftInterfaceLayers"

    Integer, [0, infinity]

    This setting determines how many interface layers are printed as part of your raft.

    "raftInterfaceThickness" 

    Millimeters

    This setting defines the layer height for the interface layers of the raft. Interface layers are printed between the base layer and surface layers. 

    "raftInterfaceWidth" 

    Millimeters

    This setting defines the extrusion width for the interface layer of your raft. 

    "raftAligned"

    True/false

    When set to "true," "raftAligned" forces all raft interface layers to run in the same direction. When set to "false," the lines of extrusion on each raft interface layer will be rotated 90 degrees from the previous layer.

    "raftModelSpacing" 

    Millimeters

    This setting defines the vertical gap between the top of the raft and the first layer of the object being printed. Positive values create a slight gap between the top raft layer and bottom object layer, making the object easier to remove from the raft, but also resulting in a less smooth first layer for the object. Negative values print the object into the raft, resulting in a stronger bond between the raft and the object. This setting affects only the first layer of the object. Subsequent layers will always be printed at the same height relative to the raft.

    "raftOutset"

    Millimeters

    This setting determines how far the raft extends around the base of your model.

    "raftSurfaceAngle"

    Degrees

    Determines the orientation of the raft's surface layers. 

    "raftSurfaceLayers"

    Integer, [0,1]

    This setting determines how many surface layers are printed as part of your raft. 

    "raftSurfaceThickness"

    Millimeters

    This setting defines the layer height for the surface layers of the raft. Surface layers are printed on top of the interface layer.

    "raftExtraOffset"

    Millimeters

    “raftExtraOffset” allows you to add to or subtract from the distance between the build plate and the extruder nozzle when a raft is being printed. Enter a positive value to add to the distance, or enter a negative value to decrease the distance.

    "minRaftBaseGap"

    Millimeters

    If the part of your model that rests on the build plate is not a flat, continuous surface, you may end up with gaps in your raft. Rafts with gaps take longer to print and may be harder to remove. This setting allows you to close small gaps in rafts. Gaps with a radius smaller than the value set here will be closed. Larger gaps will print as they normally would. The radius is taken from the shortest possible path across the gap.

    "raftSurfaceShells"

    Number of shells

    This setting determines how many shells are printed on each raft surface layer. Additional shells may make the raft easier to remove from the printed object. 

    "raftSurfaceShellSpacingMultiplier"

    Ratio

    This setting determines how far the fill on raft surface layers overlaps the innermost shell. A value of 0.0 will result in infill that completely overlaps the innermost shell. A value of 1.0 will result in infill that touches the innermost shell. 


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