C2 User Manual, Release 1.0.0
2. Raft
A raft is the best method for using platform adhesion on a Robo C2 and Robo R2. A raft is a couple layers
of plastic that will adhere to both the bed platform and the print itself. If the model has very small surface
area, a raft is also the best option for platform adhesion. A raft is comprised of three main parts: Base
layer, middle layer, and top layers.
• Base layer: This is the first layer of plastic put down and should have a larger layer width, looking almost
smushed, to help adherance to the bed.
• Middle layer: Layers that are between the base and top layers. The middle layer gives more surface area for the
top layer of the raft to lay down upon. Normally, there is only one middle layer.
• Top layers: The top layers are the layers which adhere the model to be printed to the raft iself. Top layers work
best when printed with 100% fill and two or more are printed to give it a nice clean surface area for the model
to be printed onto.
• Raft air gap: This creates a gap from the top layer of the raft to the actual print in order to remove the raft after
printing is finished. A higher value will result in an easier removal of the raft from the print, but can make it
harder for the first layer of the print to lay down and adhere correctly. Likewise, a smaller value will lay down
the first layer well, but can result in a harder to remove raft from the model due to fusing of the plastics.
3. Skirt
74 Chapter 5. Cura for Robo Desktop
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