How to unstick center disk of round slide rule?
in [Design]
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From: a7yvm109gf5d1 on 20 Feb 2010 01:15 On Feb 19, 8:51 pm, Jim Thompson <To-Email-Use-The-Envelope-I...(a)My- Web-Site.com> wrote: > On Fri, 19 Feb 2010 17:46:11 -0800, Joerg <inva...(a)invalid.invalid> > wrote: > > >Gents, > > >My round slide rule is developing a sticky center wheel. I can still > >move it but afraid my thumbs will rub off the lettering over time. It's > >this model: > > >http://sliderulemuseum.com/SIC/C35_SIC_SINCO_250_1962.jpg > > >Obviously the old "rub with a bar of soap" trick like on the linear ones > >doesn't work here. I also haven't tried any semi-destructive methods to > >pull it off. Any safe tricks to unstick it? > > >I usually use the linear one but on the road this slide rule is nice > >because it fits into the shirt pocket. > > Take it apart and carefully clean/de-grease. Then apply talc to the > slides. Beware, it may be too late if it warped :-( > > ...Jim Thompson > -- > | James E.Thompson, CTO | mens | > | Analog Innovations, Inc. | et | > | Analog/Mixed-Signal ASIC's and Discrete Systems | manus | > | Phoenix, Arizona 85048 Skype: Contacts Only | | > | Voice:(480)460-2350 Fax: Available upon request | Brass Rat | > | E-mail Icon athttp://www.analog-innovations.com| 1962 | > > I love to cook with wine. Sometimes I even put it in the food. Make sure it *is* talcum, many "baby powders" and others are actually corn starch these days.
From: JeffM on 20 Feb 2010 01:29 Joerg wrote: >They don't make'em no more. > The second-hand market? http://google.com/froogle?scoring=p&q=intitle:circular-slide-rule
From: life imitates life on 20 Feb 2010 04:04 On Fri, 19 Feb 2010 17:46:11 -0800, Joerg <invalid(a)invalid.invalid> wrote: >Gents, > >My round slide rule is developing a sticky center wheel. I can still >move it but afraid my thumbs will rub off the lettering over time. It's >this model: > >http://sliderulemuseum.com/SIC/C35_SIC_SINCO_250_1962.jpg > >Obviously the old "rub with a bar of soap" trick like on the linear ones >doesn't work here. I also haven't tried any semi-destructive methods to >pull it off. Any safe tricks to unstick it? > >I usually use the linear one but on the road this slide rule is nice >because it fits into the shirt pocket. If it really is that old (1962), I would stop using it and archive it. Put it on ebay and I will buy it as I collect them and have several (not round). But yeah, that looks cool.
From: life imitates life on 20 Feb 2010 04:07 On Fri, 19 Feb 2010 19:05:21 -0700, "Paul Hovnanian P.E." <Paul(a)Hovnanian.com> wrote: >I can't tell from the photos. Does this have a single center wheel or >does the disc with the C scale ride on top of the one with the D scale >(the T scale wheel on the other side would be a separate smaller disc). Jeez, the parting line for it is glaring, and he said "the center disc". The other side gives an illusion of another disc break because the ticks are not lined up between those two scales. Duh.Why would they be? Wouldn't need another scale if they were the same. Heheh.
From: life imitates life on 20 Feb 2010 04:09
On Fri, 19 Feb 2010 19:05:21 -0700, "Paul Hovnanian P.E." <Paul(a)Hovnanian.com> wrote: >I can't tell from the photos. Does this have a single center wheel or >does the disc with the C scale ride on top of the one with the D scale >(the T scale wheel on the other side would be a separate smaller disc). I am reasonably sure that the 'button caps' are machine threaded hubs. |