Rostock MAX v2 User's Guide
Infill Overlap is used to adjust how well the infill pattern attaches to the inside perimeter of the
part. A good infill will have a solid connection to the inside perimeter of your part, and the structural
integrity of your part depends on this.
The Speed page covers parameters that control how fast various features of the object are
printed. The speeds are listed in mm per second, or as a percentage of a related speed parameter.
The speed parameters are pretty self-
explanatory, especially if you've got the Show
Help check box set. However, there's a couple of
points I'd like to cover about printing speed.
First of all, there is a relation between your
print speed and the temperature you've set for the
material you're printing with. The basic rule is, the
faster you go, the hotter you print. This is because
as the hot end extrudes plastic, it's constantly being
cooled by the cold filament that's coming in.
Setting the extrusion temperature higher
allows the hot end to melt the incoming plastic at a
faster rate. This allows you to print more quickly.
The relation between print speed and extrusion
temperature is one of those things you'll get a feel
for as you gain experience with your printer.
You'll quickly learn that the Rostock MAX
will “talk” to you if you're printing too rapidly for
a given temperature. The extruder will begin to “skip” periodically (or frequently, depending on how
fast you're going). A skipping extruder has a very distinct sound – it's kind of a light bump or
knocking. If you watch the nylon gear that you use to manually feed filament, you'll notice that it will
briefly rotate in the opposite direction at the same time you hear the skipping sound. If you draw a line
on the face of the gear, you can spot this motion more easily. The skip is caused by the hot end's
inability to melt the material is rapidly as is required. The pressure builds up until the stepper motor
can no longer generate the force required. At this point the tension in the filament is released like a
spring and the filament pushes back with enough force to cause the stepper motor to skip steps,
resulting in a short reverse rotation.
8 – Advanced MatterControl: Settings – General - 75
Infill Overlap.
Print Speeds.
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