Hi, Brooke, To cut metric threads on an inch machine, I mesh the 127 tooth gear with the 100 tooth gear that came with my Sherline lathe threading attachment. Works great.
Don Couch --- On Fri, 12/16/11, Brooke Clarke <bro...@pacific.net> wrote: > From: Brooke Clarke <bro...@pacific.net> > Subject: Re: [time-nuts] metric / English > To: "Discussion of precise time and frequency measurement" > <time-nuts@febo.com> > Date: Friday, December 16, 2011, 9:48 AM > Hi Don: > > Sure converting lengths is easy and I have metric, English > and weird taps and dies, but how do you turn metric > threads? > > Have Fun, > > Brooke Clarke > http://www.PRC68.com > http://www.end2partygovernment.com/Brooke4Congress.html > > > Don Couch wrote: > > The idea that conversion to metric would require > replacing all of the machine tools (lathes, mills, etc) is a > myth. Any U.S. machine shop has walls and toolboxes covered > in conversion charts, converting drill, screw, wire, sheet > sizes from one crazy measurement to another. One single > additonal conversion chart, inch to metric, and you can keep > using your inch machines on metric projects. > > > > My mill has inch lead screws. I added a low cost > digital readout with a little button to show inch or > millimeter movements, and now I do everything in metric. No > problem. > > > > Don Couch > > > > --- On Thu, 12/15/11, Dan Kemppainen<d...@irtelemetrics.com> > wrote: > > > >> From: Dan Kemppainen<d...@irtelemetrics.com> > >> Subject: Re: [time-nuts] time-nuts Digest, Vol 89, > Issue 51 > >> To: time-nuts@febo.com > >> Date: Thursday, December 15, 2011, 10:29 AM > >> > >> On 12/14/2011 3:59 PM, time-nuts-requ...@febo.com > >> wrote: > >>> It's not like metric is totally absent. > We drink > >> 2 liter cokes and defend > >>> ourselves with 9mm > pistols. Our cars > >> use mostly metric parts. Even ham > >>> radio operators, arguably the most jingoistic > and set > >> in the past bunch > >>> around, get on the 80, 40, and 20 METER > bands. > >> I agree with you, and funnily enough the rest of > the NATO > >> world uses 7.62mm and 5.56mm rifles. (Both were > originally > >> based on standard inch sized rifle cartridges > designed in > >> the US) > >> > >> The problem in converting to metric would require > replacing > >> a lot of tools. For example Mills, lathes, and > other > >> machining tools and measurement devices are > expensive, and > >> last for decades. I doubt many of the small tool > shops > >> around here could afford it.It's a great idea to > standardize > >> in theory, but in practice it becomes difficult. > Maybe the > >> whole world should standardize our language. We > could all > >> switch to Spanish or Latin or Chinese to speak > with so we > >> could all talk with each other. That would > probably be more > >> helpful to me on a daily basis, than having to > switch > >> measurement systems. > >> > >> While we're on the subject, let me throw time back > into the > >> mix. We use months and days for scheduling > projects. > >> Meanwhile some of our counterparts use calendar > weeks. This > >> is much more difficult to convert between than > inch and mm. > >> When is CW 36??? > >> > >> There I threw some wood on the fire too! > >> > >> Dan > >> > >> _______________________________________________ > >> 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. > > > > > > > > _______________________________________________ > 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.