SeeMeCNC Rostock MAX v2 User Manual page 76

Secondly, there is also a direct relation between print speed and print quality. In the image
above, you'll notice that the speeds for print moves vary a bit. This is because some features don't
require a focus on surface quality.
Perimeters are a great example of this. You'll note that the inside perimeter speed is 40mm/sec,
while the outside perimeter is 35mm/sec. The inside perimeter will never been seen after the print is
finished so it can be printed at a higher rate. However, you want the visible surface of the print to be
smoother and more consistent, so you print the outside perimeters a bit more slowly.
The last bit about speed settings I want to cover is the first layer speed. You'll see that it's really
slow. The reason for this is that while hot plastic loves to stick to hot plastic, hot plastic doesn't like
sticking to other things as much. By going slowly on the first layer, you're giving the material time to
get a good grip on the surface of the bed. This is known as "part adhesion". When a part comes
unstuck from the bed during a print, it's ruined. This isn't so bad when you're five minutes into a print,
but you'll be ready to flip a table when it happens 18 hours into a 19 hour print.
The Skirt and Raft page covers settings that control how the hot end is primed at the beginning
of a print job as well as features that help the part stick to the bed.
The first section covers the Skirt feature.
A skirt in this context is basically a series of
single-layer loops printed around the perimeter of
the part. This acts as a method to "prime" the hot
end with material before the actual part begins to
print. Loops defines how many times you want to
go around the print. This is tied to the Minimum
Extrusion Length parameter. If the number of loops you specify are not enough to meet that
minimum length, additional loops will be added automatically.
The Distance from Object parameter dictates how far away the loop stands off from the part
outline. If you set the distance to zero, the skirt will become a "brim". It will result in the loops being
printed connected to the first layer of your print. This can give small parts a first layer that has a larger
surface area to improve part adhesion. Since the brim is only a single layer thick, it's usually pretty
easy to remove after the print job has completed.
I mentioned earlier that hot plastic really
loves sticking to hot plastic, but not so much to
other things. If a brim isn't doing the job for you,
you can try a Raft.
Rostock MAX v2 User's Guide
8 – Advanced MatterControl: Settings – General - 76
Skirt parameters.
Raft parameters.