C2 User Manual, Release 1.0.0
Build plate temperature determines how hot your heated build platform will get in order to adhere the
plastic down to it. The Robo C2 does not have a heated build platform, while the Robo R2 does. For the
Robo R2, PLA is best printed around a 50°C build platform, and ABS plastic at 80°C for best stick on the
first layer.
3. Enable Retraction
Retraction is used when the printer is traveling from one point to another without laying down any plastic.
During this time, there can be melted plastic in the nozzle, which could ooze out and cause unwanted
plastic on your model. In order to elimiate this ooze, enable retraction to retract, or pull back, the filament
while on these travel moves. Different material require different settings for best results. Contact your
material manufacturer for best retraction settings.
4. Retraction distance
Retraction distance determines how far the material, in millimeters, will get pulled out of the nozzle when
performing a retraction move. A short retraction distance will result in less potential damage to your
material, such as snapping or clogging, but will cause more oozing. A long retraction distance will result
in more potential damage to your material, but will have less oozing and a nicer print finish.
5. Retraction speed
Retraction speed determines how fast or slow the motor pulling the material up the nozzle will turn. A
fast retraction speed will result in a larger potential damage to your material and drive gear, but will have
less oozing. A slow retraction will have less potential damage, but result in potentially more oozing.
6. Retraction minimum travel
This determines how far your nozzle must travel in order to execute a retraction move. If your model has
a lot of small areas, this will cause the printer to retract a lot, and will be more prone to clogs and potential
errors. To decrease the chance of errors on a lot of retraction moves in a small area, increase the retraction
minimum travel. Be mindful that increasing this setting too much can result in stringing and unwanted
artifact on your printed part due to oozing.
Speed
1. Print speed
Print Speed determines the speed of the print head while printing (in mm/sec). Printing faster will get your
print done faster, but also risk the print job failing duo to motors failing or material not being extruded
properly or heated optimally. The default profiles set for the C2 and R2 are best used to keep the machine
lasting longer, at the same time as printing quickly.
2. Infill speed
This setting changes the speed in which your infill is printed. Note that because the infill of a print is not
seen, you can increase this speed if you would like. Be mindful that a faster infill speed can potentially
affect the strength of your print.
3. Outer wall speed
The speed of the outer wall, or outer perimeter. Printing the outer wall slower than the inner walls and
infill will result in a better surface finish of your printed model, while not adding too much time to your
printing job.
4. Inner wall speed
The speed of the inner walls, or inner perimeters. Because this does not affect the surface quality of your
printed model, this speed can be as fast as your infill or print speed setting.
5. Top/bottom speed
5.3. Settings 69
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