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What you can and cannot iron

3 questions about what you can iron — 1 yes, 1 no, and 1 that genuinely depend on the specifics.

Question Answer Short version
polyester It depends Yes on the low synthetic setting, inside out, with a cloth between iron and fabric.
linen Yes Yes, on high heat with plenty of steam, while the fabric is still damp.
velvet No No. Pressing crushes the pile flat and it does not come back.

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