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Brim Line Amount
This will determine the distance the brim will cover around the outside of
your object. The more brim used, the better your part will adhere to the
plate.
1.19 Raft
Raft is a platform built underneath your object, designed to help adhesion
and prevent warping.It will lay down support material, and then a platform
on top of the supports. Your model will be built on top of this platform. The
bottom surface of your printed part will not be as clean or as even when
using this option. Raft is typically not recommended.
Extra Margin
This determines the distance around the outside of your object that the raft
is created. Can be helpful for ensuring no warping of ensuring no warping
of the lower layers.
Line Spacing
This will determine the spacing between"support" lines for the raft. A small
spacing makes the support structures closer together improving strength of
the raft, but uses more material.