Hooo boy. Try to find a 2deg taper x 1.25 reamer on short notice!

DMSentra · Aug 16, 2021

Isn't happening I guess. Talked to XKut and they're out, the only supplier I can find dimensions on big enough to work. 1.22" on the big side of the hole with 2"/ft taper. Anyone have one in their pocket I can stop by and pick up? lol

MaxPrairie · Aug 16, 2021

How deep? Can you use a tapered endmill?

PeteM · Aug 17, 2021

Assuming the title is correct (2 deg. taper) . . .

Anyone sharpen reamers in Eugene? Wouldn't be cheap but someone with a decent T&C grinder should be able to make you one up from a standard reamer.

I doubt we're talking blacksmith tolerances, but you could grind a taper on the blades of an adjustable reamer and fight it for a hole or two.

What's confusing to me is that the title says two degrees and the body of the question says 2" per foot. I'd think someone would have the 2" per foot taper in stock or be willing to grind something to fit . . .??

DMSentra · Aug 17, 2021

MaxPrairie said:
How deep? Can you use a tapered endmill?

Unless something throws a wrench in the works that's what I decided to do. I have a grinder buddy that said he can fix me up as soon as I can get a 1.25" EM to him.

Ray Behner · Aug 17, 2021

Seems like if you taper an endmill to use as a reamer, it will suck itself in the hole. For your sake.....hope not.

Mtndew · Aug 17, 2021

Does anyone stock a reamer that size with that TPF? Seems like something that would normally be a special.
Even then I would imagine that it's pretty pricey.

Is there any way you can 3D machine the hole?

dandrummerman21 · Aug 17, 2021

I'm on the confused team here.

Is it 2 degrees or 2" per foot?

If it is 2 degrees, is it 2 degrees per side, or 2 degrees included?

Standard taper pins seem to have 1/4" per foot, which works out to about 1.2 degrees included. I assume this isn't for a standard taper pin.

DMSentra · Aug 17, 2021

dandrummerman21 said:
I'm on the confused team here.

Is it 2 degrees or 2" per foot?

If it is 2 degrees, is it 2 degrees per side, or 2 degrees included?

Standard taper pins seem to have 1/4" per foot, which works out to about 1.2 degrees included. I assume this isn't for a standard taper pin.

2"/ft taper per MOOG for a SuoerDuty lower balljoint.

DMSentra · Aug 17, 2021

Mtndew said:
Does anyone stock a reamer that size with that TPF? Seems like something that would normally be a special.
Even then I would imagine that it's pretty pricey.

Is there any way you can 3D machine the hole?

The only source I've found for this one is out of normal stock, yet they still have a current ebay listing for it. So far all the others I've found with the same taper are smaller dia. so won't work.
I've never seen mention of a conical interpolation? We we talking about that last night trying to come up with a solution.

DMSentra · Aug 17, 2021

Ray Behner said:
Seems like if you taper an endmill to use as a reamer, it will suck itself in the hole. For your sake.....hope not.

Good point. Maybe I'll G2 around the hole instead of plunge cutting.

MaxPrairie · Aug 17, 2021

DMSentra said:
Unless something throws a wrench in the works that's what I decided to do. I have a grinder buddy that said he can fix me up as soon as I can get a 1.25" EM to him.

I will typically buy a tapered endmill and pocket mill the tapered wall. Do it a lot for tapered bushings. 4 deg is pretty common.

DMSentra · Aug 17, 2021

MaxPrairie said:
I will typically buy a tapered endmill and pocket mill the tapered wall. Do it a lot for tapered bushings. 4 deg is pretty common.

I haven't seen one with the 9.5deg this job needs

MaxPrairie · Aug 17, 2021

DMSentra said:
I haven't seen one with the 9.5deg this job needs

I always get them custom ground… but a 1.25 carbide plunge will likely chatter so I would pocket mill it.

Garwood · Aug 17, 2021

I have a straight flute 1.250" carbide tipped reamer you could grind. I'm about 2 hours NW of Eugene.

Are you making Superduty knuckles?

dandrummerman21 · Aug 17, 2021

I wonder:

How well would taking a smaller taper reamer with the same taper per foot and use that like an endmill to interpolate the hole?

Might be a bit slappy but should work if you only have a few to do.

Booze Daily · Aug 17, 2021

If you have a rotary table and a BP you could nod the head and crank the turntable to mill your taper using a standard endmill.

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Hooo boy. Try to find a 2deg taper x 1.25 reamer on short notice!

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