Slic3r
The codes specified in Start G-code are inserted at the beginning of the
output file, directly after the temperature control commands for extruder
and bed. Note that if temperature control commands are specified (M104
and M190) then these will replace the temperature G-codes introduced by
the Filament settings.
Some common G-codes to use before the print starts are:
• G28 - Homes all the axes.
Some common G-codes to use after the print ends are:
• M104 S0 - Sets the extruder temperature to zero.
• M140 S0 - Sets the heated bed temperature to zero.
• G28 X0 - Home the X axis.
• M84 - Disables the motors.
2.5 Expert Mode
Speed
Once the printer is reliably producing good quality prints it may be
desirable to increase the speed. Doing this provides several benefits, the
most obvious of which is that the results are produced quicker, but also
faster print times can be utilised in producing more layers, i.e. lower layer
height, thus improving perceived print quality. An additional benefit is
that a faster travel movement, between extrusions, can reduce the effects
of oozing.
The best approach is to increment the various speed parameters in
small steps and observe the effect each change has on print quality. Travel
speed is a safe starting point, and it is not unrealistic to attain speeds
of up to 250mm/s (if your printer can handle it). Adjusting the speed of
perimeters, infill is available in simple mode, and the general rule is to have
the perimeter go a little slower than the infill in order to reduce possible
blemishes on the surface (infill can be faster because slight gaps will not
matter as much).
Expert mode offers more parameters to fine tune printer speeds. Dif-
ferentiation between external, small and other perimeters, infill locations,
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General
Weight and Dimensions
