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What will happen if the G-code contains the command M104 S0 during a print?

medium📝 Analysis Q5 of 15
3D Printing - G-code Fundamentals
What will happen if the G-code contains the command M104 S0 during a print?
AThe print bed will heat to 0°C
BThe extruder heater will turn off
CThe printer will pause immediately
DThe fan speed will set to 0
Step-by-Step Solution
Solution:
  1. Step 1: Understand M104 command

    M104 sets the extruder temperature to the specified value.
  2. Step 2: Interpret S0 parameter

    S0 means setting temperature to 0°C, effectively turning off the extruder heater.
  3. Final Answer:

    The extruder heater will turn off -> Option B
  4. Quick Check:

    M104 S0 = Turn off extruder heater [OK]
Quick Trick: M104 sets extruder temp; S0 turns it off [OK]
Common Mistakes:
  • Thinking M104 controls bed temperature
  • Assuming it pauses the print
  • Confusing fan speed with temperature

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