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Never PVC (chlorine). Faux leather, ABS, foams, fiberglass and PTFE also appear on university and maker no-go lists. Here is each material, the stated hazard, who said it, and a safe swap.
Mara Vance· Oct 20, 2026· 9 min
Mara Vance · Jul 19, 2026 · 5 min
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Mara Vance · Jul 19, 2026 · 5 min
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