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Date:         Sun, 11 Dec 2016 21:45:34 -0800
Reply-To:     Stuart MacMillan <stuartmacm@GMAIL.COM>
Sender:       Vanagon Mailing List <>
From:         Stuart MacMillan <stuartmacm@GMAIL.COM>
Subject:      Re: NVC -- Need easy-out or similar tool for 10-32 stainless
              steel bolts
Comments: To: John Lauterbach <john@JHL.MGACOXMAIL.COM>
In-Reply-To:  <>
Content-Type: text/plain; charset="UTF-8"

Hmm, I once used and then sold that equipment. You can drive an old knife blade or jeweler's screwdriver into the hole and twist out the broken ferrule. If it resists, freeze it. If that fails, run really hot water over it. This happened all the time because lab folks constantly over tightened these connections. No miniature torque wrenches. ;-)


-----Original Message----- From: Vanagon Mailing List [] On Behalf Of John Lauterbach Sent: Sunday, December 11, 2016 9:21 PM To: vanagon@GERRY.VANAGON.COM Subject: Re: NVC -- Need easy-out or similar tool for 10-32 stainless steel bolts

Thank you, Alistair. We do HO-gauge model trains so we have plenty of small drills.


On Sun, Dec 11, 2016 at 11:30 PM, Alistair Bell wrote:

> Jeeze John, I threw out a bunch of HPLC fittings some years ago. Still

> have a few plastic odds and ends fittings which I think were from a > beckman, but god I can't recall. > Do you have a good set of small drills? Can you sneak up with drill > size to drill out most of broken part and no damage femal threads? > > Alistair > > > > > >> On Dec 11, 2016, at 7:50 PM, John Lauterbach >> <john@JHL.MGACOXMAIL.COM> wrote: >> >> I am hoping for the wisdom of the list is locating an easy-out or >> similar tool for SS 10-32 bolts. If any of you have worked with high

>> performance liquid chromatography (HPLC) equipment (particularly that

>> made by Waters Associates), you are probably familiar with so-called >> ferrule nuts. These are hex-head 10-32 SS bolts with a hole down the

>> center to clear 1/16-inch OD SS tubing. Basically the 1/16-inch >> tubing is connected to pumps, columns, etc., with the ferrule nut >> followed by a ferrule. You screw the ferrule nut -- ferule >> combination into a specially machine fitting and tighten it down to >> make a tight seal. >> This passed summer, I bought a collection of 1980s-vintage HPLC >> equipment to teach my Son lab instrument repair and computer >> interfacing. In the process of letting him learn by doing, he >> snapped the heads off a couple of the ferrule nuts leaving the end >> and the ferrule stuck in the equipment. Parts involved are NLA so >> there is need for a way of extracting the remaining part of the >> ferrule nut and ferrule. I can get the parts to a Dremel drill press

>> to drill the tubing out of the broken nut, but then need something to

>> extract the remainder of the ferrule nut. Are there miniature >> easy-outs or similar tools? >> >> Thank you, >> >> John

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