Header banner
Revain logoHome Page
Jonathan Suarez photo
1 Level
814 Review
37 Karma

Review on πŸ”© Amoolo Twist Drill: Cobalt Stainless Steel by Jonathan Suarez

Revainrating 5 out of 5

I doubt these pieces contain cobalt at all.

With the right technique, speed, and lubrication, I was able to drill three holes in 3/16 inch thick steel with a 1/4 inch drill bit. The first hole went quite well, the second hole took significantly longer and the third hole took about 5 minutes. I doubt I'll be able to drill another hole in her no matter how much time I spend on it. I first drilled a 1/8" pilot hole before using a 1/4" bit. To be honest, the performance I've seen with this drill is worse than what I expected from a regular HSS drill. I used a real Cobolt 5% drill the weekend before and drilled at least 20 holes with it and it's still cutting well so I know I'm using the right technique. It was a waste of time and money on my part.

Pros
  • Power & Hand Tools
Cons
  • Not as thick as other picks