I use these to drill hard drives before recycling. Sometimes I get old drive cases made out of a heavy-duty aluminum alloy, rather than the cheaper aluminum most drives are made out of today. Bits still work great, just drill a little slower. Highly recommended.
πͺ Bi-Metal Cutting Blades: Imachinist S933414 - Enhancing Precision and Performance
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Enhanced Cutting Efficiency with Olson FB23370DB 0 025 2 Inch Blade
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πͺ DEWALT DW3984C Portable Blade Set of 3-Pack
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πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
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