What are the most common DIY foam-cutter build mistakes?

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In rough order: (1) **towers not parallel/square** — every cut is skewed; (2) **a slack wire** — it bows, lags and drifts; (3) **wire too cold or too hot for the feedrate** — tearing or melting; (4) **sharing one power supply** for wire and electronics, causing noise and missed steps; (5) **building too big**, which kills rigidity and adds wire sag; (6) **no spring tensioner**, so the wire goes slack the moment it heats; and (7) **running heat current through the frame** instead of an isolated wire.

Fix the geometry and the wire first. Almost every 'my cuts are bad' problem traces back to squareness, tension, or the heat-versus-feed balance — rarely to the electronics.

Quais são os erros mais comuns na construção de cortadores de espuma DIY?

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