Software
Raft
Also known as: raft · balsa · base de impresion · cama de sacrificio
Short definition
A raft is a multi-layer platform printed first, on top of which the part is built, instead of printing directly onto the bed.
Full definition
It is used when the bed is not perfectly level, when the part's contact area is minimal, or when the material lifts easily. The raft isolates the part from bed irregularities and spreads heat more evenly, at the cost of wasting material, lengthening the print and leaving a textured underside. In resin printing the equivalent concept is the raft that holds supports above the platform. Today, with auto-levelling beds and PEI sheets, rafts are used far less than ten years ago: in most cases a brim is enough.
Related terms
- BrimA brim is a flat single-layer ring the slicer prints attached to the part's outline to increase its contact area with the bed.
- First layerThe first layer is the one deposited directly onto the bed and it determines whether the part stays put for the whole print.
- Automatic bed levellingAutomatic bed levelling is the process where the printer probes several points on the bed and compensates for height differences in software during the first layer.
Software
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