Review on π οΈ Heat Treated Stainless Steel Drilling: A Guide for Straight and Effective Results by Brad Blake
Excellent pilot hole drilling
I used bits from my local mortar store but was only able to drill 5-10 holes before they dulled and stopped cutting. Drilling spot welds on an old machine. After putting them in I drilled 3x more with 1 bit and it was still going when I finally drilled them out. Great buy for the money.
- Power and hand tools
- Questionable senior purchase
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