Print fails in class: three lessons

Three real failures from the printing course, and the habits they produced.

The fails

A lid printed without tolerance that never closed; a tower too thin that snapped; an unsupported overhang that became spaghetti. Each was predictable on paper.

The lessons

Design for the machine, not the render: clearances from day one, minimum feature thickness, and a support strategy before printing. The class now runs a ten-minute pre-print checklist.

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