🔍 You can carve a variety of materials. SpeTool’s solid carbide V-bits can handle **hardwoods, softwoods, plywood, MDF** – all the common woods – and they also do well in **plastics like acrylic, ABS, HDPE**, etc.:contentReference[oaicite:75]{index=75}. Many people use them to engrave signs in plastic laminate or acrylic for lit signs. They can even etch into **non-ferrous metals** like brass or aluminum if you’re gentle (though for a lot of metal engraving, a small carbide drag engraving bit or specialty bit might be better). But if you have, say, an anodized aluminum dog tag or a brass name plate, a very sharp V-bit can engrave it – you just use shallow passes. SpeTool notes that O-flute bits disperse heat well and stop welding in plastics:contentReference[oaicite:76]{index=76} (that’s more about single-flute end mills) – but for V-bits on plastic, similar logic: go fast enough to get chips, not melty dust. So, while wood is the primary target (signmaking in wood, etc.), these bits are quite versatile. Users have reported good results engraving PCB boards (copper) and acrylic with SpeTool V-bits as well. Just adjust your speeds and feeds appropriately – slower feed for harder materials.

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