Found this in an old tool bag. Not mine and no clue where it came from. What kind of bit is this and what’s it for?
I’m just seeing a drill bit. Maybe it’s different in person
Diametrically opposed, dual surface, rotary aperture creation device.
That’s actually not a drill bit, it is called a pocket knife.
Joe
Alright jokers… it has a raised “bump” all the way down the cutting channel I haven’t seen before. (Most) engineers don’t just throw stuff on other stuff Willy nilly like.
I have a number of the raised edge bits. They are metal bits with supposedly less drag than the solid ones. They do seem to cut a little faster and last a little longer before they need sharpening but that’s am impression nothing I have ever tried to measure.
This one has nylon in it. Doesn’t mean whoever was using before I accidentally stole it was using it the right way. Lol
I’m gonna chuck it into the drill press and see how well it cuts steel angle. I may need it soon.
Haha, Ok I stand corrected. That is different and I don’t know what it is.
What I want to know is what is the book from the other thread?
Joe
Nice, Thanks
It’s a masonry bit. For drilling bricks and tiles
that is what i looked like to me, they do have more of a sharp corner with a ridge…
All my masonry bits have a larger tip on them than the drill bit body. I didn’t see that on this bit. The nylon insert is different though, didn’t pick up on that before. That may make it something else. IDK
The one time I feel confident enough to respond. It’s appears to be to be just standard HSS (high speed steel)
Jobber drill with 118 deg point,with a black oxide finish. for drilling mild carbon steel . The nylon on the outside is put on the Drill by tool grinder, to protect the cutting edges. The Mason’s drill have a carbide tip made for a hammer drill.
What are you drill bit Rain Man?! Jk. I trust that answer if for no other reason it sounds better than the rest.
You should respond more often! Thanks @Roaddogtx
Well I wouldn’t call myself a professional pressure washer yet, but in a former life I was a machinists, for about 20 years, so I’ve drilled a few holes.
Any questions about cutting metal I’ll throw out my .02 , and help when I can, but all else I’ll just look and read. Y’all are the pros here. I’ll learn from everyone else’s mistakes.
It’s a diamond coated laser guided magnesium carbide bit. It’s what the bomb squad use for drilling holes into suspicious packages so they can insert their endoscope.
How’s that