Re: [CAD_CAM_EDM_DRO] Re: Who had some .100 pitch ball screws FS??

Just for the record, the inch has been based on the metric system (SI)
since 1893.
The exact conversion is 1" = 2.54 cm.

More interesting history here:
http://lamar.colostate.edu/~hillger/dates.htm

Regards,
JJ

On Tuesday, Oct 21, 2003, at 23:40 US/Eastern, skykotech wrote:

> I don't understand this. .1 pitch would be 2.54 and several more
> zeros, not 2.538. I think it is like 2.54000000xxx something,
> although I am having a hard time finding any other conversion than
> just 2.54 cm per inch (or 2.54mm per .1 inch).
>
> lol, i actually panicked for a minute and double checked the 2.538
> being wrong because I have very high resolution encoders and have the
> step conversion factor to inches for my metric ballscrews in EMC.
>
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Anderson <janders@n...>
> wrote:
>> Jim,
>>
>> The screws were being described as .100 pitch. I see .100 = 2.538mm
>> which is close enough they might have been mis-measured.
>> I've never looked for screws in that pitch myself, but if I can find
>> them, I'll use them. I've seen ads for Steinmeyer, might go with
> them
>> given qty discounts. My dad's gone far with his Sherline, but it's
>> wearing out and we've decided to build up something with linear
> ways and
>> real ball screws. With the automatic tool changer drawings for the
>> Sherline spindle, I'm once again interested in building something
>> similar for myself, so maybe he and I can double up and get a good
>> price.
>> Do you deal with anyone on the west coast for Steinmeyer that you
> would
>> recommend?
>>
>> Thanks,
>>
>> Jon
>
>
>
> Addresses:
> FAQ: http://www.ktmarketing.com/faq.html
> FILES: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/
> Post Messages: CAD_CAM_EDM_DRO@yahoogroups.com
>
> Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
> Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
> List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...,
> timg@...
> Moderator: pentam@... indigo_red@... [Moderators]
> URL to this group: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>
> OFF Topic POSTS: General Machining
> If you wish to post on unlimited OT subjects goto:
> aol://5863:126/rec.crafts.metalworking or go thru Google.com to reach
> it if you have trouble.
> http://www.metalworking.com/news_servers.html
>
> http://groups.yahoo.com/group/jobshophomeshop I consider this to be
> a sister site to the CCED group, as many of the same members are
> there, for OT subjects, that are not allowed on the CCED list.
>
> NOTICE: ALL POSTINGS TO THIS GROUP BECOME PUBLIC DOMAIN BY POSTING
> THEM. DON'T POST IF YOU CAN NOT ACCEPT THIS.....NO EXCEPTIONS........
> bill
> List Mom
> List Owner
>
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>