Comments by "Paul Frederick" (@1pcfred) on "Best Drill Bit Set? $11 vs $200? Let’s Settle This!" video.

Your grandpa made some good bits. Clevelands are legit.
5
@ronfox5519 what you're experiencing is called survivor bias. What's good tends to outlast what's not good. That can give one a false impression that everything in the past must have been good because that's all that remains today. But they had garbage dumps in the past and they used them. If something was real junk it got junked. The good stuff they tended to hang onto more. Every now and again some real trash does manage to survive though and I've seen it and even have some of it. Like a set of Made in Japan twist drills that get dull drilling soft wood. The steel in them is just that bad. You could tie those bits in knots. Truly horrible stuff.
3
Every bit got some cutting fluid. Which is more than most folks use. One hole not deep bore one shot is fine. Todd isn't trying to give each bit ideal conditions just equal ones. Plus he was running at about half production rotational speed. So he didn't need to flood cool. These are just head to head tests so we can compare how the products perform against each other. Really he should have run them all dry. That's how most people drill. He should have burnt them up too. Again that's what everyone does. See which bit turns the prettiest blue.
2
In the real world people don't baby twist drill bits. Mostly they abuse them. Oh the material is hard so I'd better run as fast as I can!
2
That's why it's called a drill PRESS. PRESS is short for PRESSure. Beyond that drill presses press very straight. That's important too.
1
That's funny because the fastest drill bit was the first hole he drilled. So there goes all of your theories.
1
@ronfox5519 foe snizzle
1
Tapping aluminum can be a bit weird. There's a lot of different aluminum alloys. Then aluminum can react with certain tapping fluids. So there's a host of potential issues. Just because aluminum may be soft doesn't mean it is easy to tap.
1
@hunnybunnysheavymetalmusic6542 you and everybody else beats the crap out of drill bits. One person in the comments said they were drilling ceramic tiles with twist drills. I read that and just thought whoa. I mean might as sell just throw Momma down the stairs while you're at it too.
1
Abrasives are a lot harder than even hard steel. The Drill Doctor wheel is diamond. Which can be an issue grinding steel with it. You get carbon migration grinding steel on diamond. Maybe DD just runs slowly enough it's not a problem? But at high speed it generates enough heat it is.
1
Some stainless work hardens. So then feed pressure is the most important thing. You try to baby it and the stainless just gets harder. When it does then you have to punch through the hardness.
1
It isn't titanium it is titanium nitride. Titanium nitride isn't a metal it is a ceramic. M42 cobalt steel has a Rockwell hardness of 68 to 70 and titanium nitride has a Vickers hardness of 1800–2100 66.5 Rockwell is 900 Vickers 1800–2100 is off the conversion chart. Way off.
1