lipped brad point drill bits delayed drilling

Brad point bits are pretty aggressive. I like to use them for stopped depth holes at the drill press. Forstner bits cut cleaner, but are less aggressive.

-- Willie, Washington "If You Choose Not To Decide, You Still Have Made a Choice" - Rush

With the cordless drill should I be going full speed into it or have the drill spinning slower

The issue sounds like the bit is slipping in the chuck. Which would make it a chuck problem or user problem, not a bit problem.

The issue sounds like the bit is slipping in the chuck. Which would make it a chuck problem or user problem, not a bit problem.

- gargey

I don’t think that’s the issue, more so imagine that you were drilling through different densities of materials and it slows down through the hard stuff. Except that the issue happens even in a sort 2×4

here’s a video of what i’m talking about, first bit is 3/8 and the grabbiness is apparent then second bit is smaller bit less. tried really slow to see how it changes it, didn’t want to get started had to really push down hard.

https://drive.google.com/file/d/0B9gFoMRsqnY2WDllbHptQmY1ems/view?usp=sharing

these bits are the sharpest to the touch i’ve felt

you’re not clearing chips from the hole, so the delay is from the bit having to pulverize the waste into small enough pieces so it can continue

you need to drill a bit, pull the bit out a little so the waste gets carried to the surface, then continue

sorta like taking small drill “stabs”... your bits will dull very quickly with the “he-man” approach

They act like they are dull bits or maybe have burred leading edge.

-- Chuck, Michigan,

larger bits sharpened for meta lWORK BETTER FOR ME.
If grey cells are working, metal bits are sharpend @ 137 degrees.

-- Sawdust and shavings are therapeutic

I’m with Dave here. The tip takes a bit to bit to cut through the skin and it (along with the outer lips) is really just for alignment. It is not until the main cutters engage and the flutes begin clearing the waste that your bit really gets going.

I have a set of the lee valley lipped bits.
In a drill press sometimes they will cut a very small round disk out at the beginning of the hole.If it gets trapped between the Spurs then it will prevent the bit from drilling.
So the choice is to remove it or add more pressure.
It took me a few try’s to use my bits properly in a drill press.With a hand drill they are grabby and will self feed.Eps in certain woods.
They have their place for very precise hole making.

Aj

-- Aj

you re not clearing chips from the hole, so the delay is from the bit having to pulverize the waste into small enough pieces so it can continue

you need to drill a bit, pull the bit out a little so the waste gets carried to the surface, then continue

sorta like taking small drill “stabs”... your bits will dull very quickly with the “he-man” approach

- davezedlee

thanks, thats kind of what i was thinking too but it jus seems weird that even at the very start of the cut it stops cutting. here’s some photos of when it gets stuck and also at the end when all the chips are clogged up

I have a set of the lee valley lipped bits.
In a drill press sometimes they will cut a very small round disk out at the beginning of the hole.If it gets trapped between the Spurs then it will prevent the bit from drilling.
So the choice is to remove it or add more pressure.
It took me a few try s to use my bits properly in a drill press.With a hand drill they are grabby and will self feed.Eps in certain woods.
They have their place for very precise hole making.

Aj

- Aj2

I’m glad i’m not the only know noticing this grabby nature. i tried to drill a hole in my japanese saw handle and it busted out the end because it was so grabby.
Is this how all brad points are or should i try a different brand. pretty disappointed for how much i spent on these

They act like they are dull bits or maybe have burred leading edge.

- Woodchuck2010

they definitely feel like the sharpest bits i’ve ever owned, holding them on the sides feels like sharp knives and the pointy tip i have to be really careful touching.
i’ll check the leading edge is that the shank of the pointy tip?