Lubricate it with WD-40 and keep it hot, drilled 144 holes with no problems and never needed sharpening. Much better than a regular drill. After lubricating with WD-40, the spark plugs popped out on their own and were able to continue working.
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πͺ Durable DEWALT DW3986C Portable Blade 3 Pack for Efficient Cutting
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πͺ DEWALT DW3984C Portable Blade Set of 3-Pack