Nice! Do you mind posting some photos?
Thanks. Edésio On Fri, Jul 28, 2017 at 12:46:30PM -0700, cdel...@juno.com wrote: > Well I did some research and found my new best friend! > > If you remember I needed: "I have a square aluminum tube 5" X 5" with a > .25" wall it's 8 1/2" long. > > I need 20 holes in each end tapped for 4/40 and 1/2" deep." > > This for a Rubidium standard I am working on. > > I found all about self forming taps! > > I drilled the 20 1/2" deep holes and then made a handwheel to attach to > the pulley on my drill press. 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! > > I then got another 8-32 self forming tap to do the holes for 15 feedthru > capacitors, again as fast as I could turn the handwheel. > > I'm very happy to discover these taps!!!! > > Cheers, > > Corby > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.