Crucial Exams

CompTIA A+ 220-1101 (V14) Practice Question

A technician is troubleshooting an FDM 3-D printer that repeatedly shows warping: the center of each print adheres but the outer edges lift from the build plate. The bed is level, clean, drafts are minimal, and the part-cooling fan is set to a low speed for the first layers. Which of the following is the MOST likely cause of this problem?

  • Uneven heat distribution across the heated bed

  • Z-offset set too close, excessively squashing the first layer

  • Nozzle replaced with a 0.2 mm diameter tip instead of 0.4 mm

  • Model sliced with 100 % infill density

CompTIA A+ 220-1101 (V14)
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