Show off your largest drill bit!

[remileblanc]

i dont own it but its a drill they just bought at work. 3.300" diameter and 42" long as it sits there. i have another 12" extention i can put on to get to 54". for scale purposes, thats a 24" chuck.

 

[FrostBite]

I know this is an older thread, but I picked this up at an auction and thought I would share. It's 3.375" in diameter and over 2' long weighing in around 40 lbs.

 

[sasquatch12]

What size/number of taper, #6 or #7 Mt ?

 

[kctyphoon]

 

[kctyphoon]

Do I win?

 

[gtermini]

I figured I was in for a win until that damn 3 3/8" showed up. Well, if I can't have the biggest, I'll try for quantity. My largest is 2 15/16". There are drills to that size by 16ths above 1 1/2" and by 64ths below. There are at least a dozen NOS of each size below 1" and a good supply of the larger ones as well. There are shell reamers, plain reamers, and lathe mandrels to compliment every drill.

Standard 12" Starrett square for scale:

"Small" drills (1/4-1"):

Shell reamers:

Greyson

 

[bcradio]

i dont own it but its a drill they just bought at work. 3.300" diameter and 42" long as it sits there. i have another 12" extention i can put on to get to 54". for scale purposes, thats a 24" chuck.

Got a picture of the drill bit?

 

[FrostBite]

What size/number of taper, #6 or #7 Mt ?

MT6.

None of my machines are very big by any standards, but this bit makes them look like toys.

The ol' nine inch doesn't stand a chance.

The Wilton Strands would fail too.

And next to a 1" and 1/2" MT2 bit for reference.

 

[riddle789]

I've been a lurker here for awhile and somehow missed this thread until now. I acquired this a few months back, figured it would be worthy of my first post.

3 1/2"

 

[Scott r c]

Do I win?

That depends, do you own Verizon?

 

[Blöckw@rt]