2.5. EXPERT MODE
• Fan speed - Determines the minimum and maximum speeds - useful
for fans that run too fast by default.
• Bridges fan speed - As the material stretches over wide gaps, it
makes sense to try and cool it as much as possible, therefore a full
fan speed is recommended.
• Disable fan for first n layers - Section 2.3 detailed how
important the rst layer is, and so it makes sense not to apply the
fan until sure the print is securely attached to the bed. Keeping the
fan turned o for the rst two or three layers is a good idea.
• Keep fan always on - Overrides any other choices and has the fan
run continuously, at least at the minimum speed setting. This can be
useful when printing with PLA, but is not recommended for ABS.
• Enable fan if print time is below t seconds - Triggers the fan
if the layer will be completed within the given number of seconds.
• Slow down if layer print time is below t seconds - Slows
down the print if the layer will be completed within the given number
of seconds.
• Min print speed - A lower limit on how slowly a layer can be printed.
Support Material
Generally, most 3D models will print with overhanging parts by up to a
certain degree. The angle is determined by several factors, most notably
layer height and extrusion width, and is usually around 45°. For models
with larger overhangs a support structure may have to be printed below it.
This incurs the use of more material, longer print times, and post printing
clean-up.
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