- Joined
- Oct 4, 2016
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- 7,148
I have 40 5/16 holes to drill in 1/4, and 3/16 316 SS plates, I have both Cobalt, and Carbide drill bits. What I'm wondering is if cool mist spray is enough lubricity, and cooling, or my next option would be drizzling cutting fluid, which is better, and what bit?