Tell us about yourself!
He used the wrong term here. To your credit, he should have stated "counter-bore." To his credit, in the video he uses a forstner bit, so he IS counter-boring. Additionally, he places a steel washer in each hole, effectively negating the sink vs. bore issue anyway.Personally, I find it far easier to drill the counter-bore before the through-hole to ensure concentric alignment, but seems he pulled it off anyway!