I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.

On Mar 14, 7:29*pm, (Robert Dunham II) wrote:
I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.

No.

There are stepped drill bits available. Most of them have the larger
step ground square, like a counterbore, but you can find some with
angled steps. Or have them ground that way by a sharpening shop.

Those will cut a hole plus a bevel, or countersink. They would work
fine on a piece of flat plate. On a piece of pipe, though, all they
would do is bevel the very top of the curve.

2.375" is a pretty good sized drill. And it's tough to drill through
a piece of pipe without the bit grabbing. You might consider a hole
saw instead.

John Martin

Hole saw. Then 4" grinder for bevel.

Robert Dunham II wrote:
I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.

Robert Dunham II wrote:
I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.

Plasma cutter and a template.

--
Steve W.
Near Cooperstown, New York

Life is not like a box of chocolates
it's more like a jar of jalapenos-
what you do today could burn your ass tomorrow!

Sounds like a core drill / Cole drill. Yea plasma fine cut
edge but it might be messy - grind out and then weld.

If a drill was used then the hole would be cleaner.


Just wish I knew what IPS meant. Inches per second ? Inside ???

ID ok - IPS ?

Martin

Martin H. Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
TSRA, Endowed; NRA LOH & Patron Member, Golden Eagle, Patriot's Medal.
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member.
http://lufkinced.com/


Steve W. wrote:
Robert Dunham II wrote:
I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.

Plasma cutter and a template.



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On Fri, 14 Mar 2008 19:29:35 -0500, (Robert Dunham
II) wrote:

I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.


You can have any sort of tool like this ground by any decent
cutter/tool grinder.

Probably cost about $250 including the stock drill they will grind
down.

Gunner



"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner

gunner, I don't think any kind of custom bit will chamfer the hole the way
he wants on an intersecting cylinder.


"Gunner Asch" wrote in message
...
On Fri, 14 Mar 2008 19:29:35 -0500, (Robert Dunham
II) wrote:

I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.


You can have any sort of tool like this ground by any decent
cutter/tool grinder.

Probably cost about $250 including the stock drill they will grind
down.

Gunner



"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner

On Sat, 15 Mar 2008 16:28:15 GMT, "Jon"
wrote:

gunner, I don't think any kind of custom bit will chamfer the hole the way
he wants on an intersecting cylinder.

Cylinder...cringe...absoutely correct. Not with an even chamfer around
the hole. Nope. You are indeed correct.

It could be done on a CNC mill with helical interpelation (sp?) but
not with a single hand tool, other than a die grinder.

Gunner



"Gunner Asch" wrote in message
.. .
On Fri, 14 Mar 2008 19:29:35 -0500, (Robert Dunham
II) wrote:

I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.


You can have any sort of tool like this ground by any decent
cutter/tool grinder.

Probably cost about $250 including the stock drill they will grind
down.

Gunner



"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner




"Pax Americana is a philosophy. Hardly an empire.
Making sure other people play nice and dont kill each other (and us)
off in job lots is hardly empire building, particularly when you give
them self determination under "play nice" rules.

Think of it as having your older brother knock the **** out of you
for torturing the cat." Gunner

We substituted a plasma cutter head on a robot welding arm to do
production run quantities of 3/8" aluminum plate cones intersecting with
4" schedule 40 aluminum pipe. That was a nasty set of angles! But it
sure was nice to let the welders ask for a little bit more or less bevel
in a specific spot, tell the robot operator, done deed.

Steve W. wrote:
Robert Dunham II wrote:
I want to drill a piece of 3"IPS (3.5"OD) Sch. 80 wall steel pipe so
that a 2"IPS (2.375"OD) pipe can go through it and also have the hole
beveled for welding, is there such a drill available for purchase.

Plasma cutter and a template.