Kerosine is a better tap lube for Aluminum as it is more persistent and less flammable
Content by Scott Typos by Siri > On Jul 29, 2017, at 6:41 PM, Joseph Gwinn <[email protected]> wrote: > >> On Sat, 29 Jul 2017 12:00:02 -0400, [email protected] wrote: >> Send time-nuts mailing list submissions to >> [email protected] >> >> Message: 7 >> Date: Fri, 28 Jul 2017 14:11:09 -0700 >> From: "Gary E. Miller" <[email protected]> >> To: Discussion of precise time and frequency measurement >> <[email protected]> >> Subject: Re: [time-nuts] Machining some aluminum help! >> Message-ID: <[email protected]> >> Content-Type: text/plain; charset="utf-8" >> >> Yo [email protected]! >> >> On Fri, 28 Jul 2017 12:46:30 -0700 >> <[email protected]> wrote: >> >>> After mounting the tap in the drill >>> press and putting a dab of Crisco on the tap I was able to tap each >>> hole to a depth of 7/16" as fast as I could turn the handwheel! >> >> >> Cool! >> >> I suggest you get some real cutting fluid. The threads will be smoother. > > I second that. What I use is a lubricant wax made by Lenox, the saw > maker. It's intended for metal-cutting band saws, but works just > splendid for form taps. There are many equivalents. > > By the way, when drilling aluminum, use denatured alcohol as the > cutting fluid. This will prevent aluminum gumming up the cutting edge > of the drill. > > And, as others have mentioned, one does not use the same size drill for > forming taps as for cutting taps. The diameter accuracy required can > only be achieved by using the correct number (versus fractional) drill > bit size. Do not use Chinese drill bits - steel not good enough. US, > Japan, Germany et al are OK. > > Joe Gwinn > > >> RGDS >> GARY >> --------------------------------------------------------------------------- >> >> End of time-nuts Digest, Vol 156, Issue 36 >> ****************************************** > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
