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Date:         Tue, 23 Mar 2004 11:11:24 -0500
Reply-To:     Trvlr2001@AOL.COM
Sender:       Vanagon Mailing List <vanagon@gerry.vanagon.com>
From:         John Carpenter <Trvlr2001@AOL.COM>
Subject:      Re: Tapping and dieing
Content-Type: text/plain; charset=iso-8859-1

In a message dated 3/23/2004 11:09:19 AM Eastern Standard Time, Trvlr2001 writes:

> > Subj: Re: Tapping and dieing > Date: 3/23/2004 11:09:19 AM Eastern Standard Time > From: Trvlr2001 > To: THX0001 > > > > > In a message dated 3/21/2004 4:29:24 PM Eastern Standard Time, THX0001@AOL.COM writes: > > > In a message dated 3/21/04 3:14:16 PM, NBuck4149@AOL.COM writes: > > > > << 40 piece set from Harbor Freight and have been pleased with the quality and > > variety. So far they have been good enough for cleaning threads and the > > occasional new hole. Hard to go wrong for $10. >> > > > > The problem with this grade of tool is that they will fail when they are > > needed the most. A tap breaks most often when it is being backed out not when it > > is cutting the threads. And, as unlikely as it may sound, broken taps occur > > in aluminum more often than in steel. A cheap tap is an accident waiting to > > happen and a broken tap causes all manner of lost effort. Instead of buying a > > set of junk taps mostly composed of sizes which will never be used, I think it > > is much better to buy quality taps as they are needed. > > Think Butterfield or > > Cleveland Twist, not Ron Fu. > > > > George > Hi All, > I agree with George 100% ! > That said; > Always use a good quality tapping fluid, not just any old oil, or what have you! > Also, there is a special tapping fluid made just for aluminum, works better. > When you are tapping a hole, size the hole correctly for > the application you are doing. > there may be three recommended hole sizes, > for the correct percentage of threads required, > and for the metal, or material being tapped. > Important, and especially with the cheap taps, > Clean the tap as you go! > that is, go in a little, > then back out a lot. > squirt some tap fluid, > do again, > repeat till finished. > Make sure the tap is square to the work, > keep it straight, & > Keep the pressure even on the tap handle. > Try to avoid using crescent wrenches etc. > John C. > SLC, UT > PS; > broke more taps in my day, than I care to admit! :)


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