Newbie- Drillpress for 23mm smooth flat circular face bore?

[jimlh]

Greetings,
Let me start by apologizing if this is the wrong place to post things like this, if any moderators see this please feel free to move it. I also must apologize for my lack of experience regarding this.

My problem:
I am trying to fabricate a fitting to mate with an existing piece that has 18mm x 1.5mm male threads with an o-ring. In order to accomodate the o-ring it looks like I need a 23mm diameter circular smooth flat face around the female fitting around 1.5mm deep. Is there a good way to do this using a benchtop drill press? I cannot seem to find 23mm end mills, cutting burs or any other thing that seems like I could use for it. The material I would like to use is bronze or brass.

Thanks in advance for any suggestions.

Jim


UPDATE: Ok Im assuming by the lack of replies that this question falls below the threshold of worth answering, fair enough. I am pretty sure the real way to do this is to use the most basic of procedures with a lathe, or interpolation with an end mill. But I do not have access to a lathe or milling machine, only a drill press. While I am planning to someday have a cnc milling machine and a lathe, I certainly can't afford it for this one cut. I am hoping that some machining allstar would toss out a cool trick from their bag of experience or at least mention why I shouldn't even be going down this road.

[RICHARD ZASTROW]

jimlh, you might want to check out hydraulic porting tool suppliers or catalogs. There might be a commercially available tool.

As far as circular interpolating with an end mill, I had bad luck there. The little circular swirls in the finish propagated leaks. These were very high pressure valve bodies.

Dick Z

[handlewanker]

Hi Jimlh, what you need for a drill press is a spot facing cutter.

This is just a round bar like a boring bar that is held in the drill chuck, and has a round or square hole through the side about 1/2" up from the end.

Then you make a flat faced tool bit from a piece of High Speed Steel, that sticks out the side far enough to sweep the diam of the face you're going to cut.

The 1/2" diam end, or whatever diam you have in the bore, end length, fits into the bore and acts as a steadying guide when cutting the face.

More details with a sketch if you desperately need it.
Ian.

[PixMan]

You might be able to get a forum member to help you out. Where are you located? I've got a lathe and a manual mill (with a rotary table) and would be willing to help you out with this if you're near central Massachusetts.