Carriage Skew / Diagonal Drift
medium
mechanical
alignment
Diagonal misregistration across width from skewed rails or carriage.
Likely Causes
Loose carriage rail or bearings: Allows the carriage to move out of square.
Uneven belt tension: Pulls one side of the carriage more than the other.
Quick Checks
- Print a square grid and measure diagonals.
- Check rail fasteners and carriage play.
Step-by-Step Fix
Square rails; tighten carriage play — Eliminates diagonal drift
Acceptance Criteria
- Opposite grid corners measure equal within 0.5 mm