How to unstick center disk of round slide rule?
in [Design]
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From: MK on 23 Feb 2010 06:02 "Joerg" <invalid(a)invalid.invalid> wrote in message news:7ugbsaFh59U1(a)mid.individual.net... > MK wrote: >> "Joerg" <invalid(a)invalid.invalid> wrote in message >> news:7u8t7eFgi2U1(a)mid.individual.net... >>> 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. >>> >>> -- >>> Regards, Joerg >>> >>> http://www.analogconsultants.com/ >>> >>> "gmail" domain blocked because of excessive spam. >>> Use another domain or send PM. >>> >> >> Buy a calculator - been around more than 30 years now - some of them >> pretty good. >> >> Mine's an HP32S which works in RPN so has enough obscurity factor to put >> off casual borrowers ! >> > > Got that, a HP11C. However, when calculating part value ratios a slide > rule is more practical because you typically only have 6 or 12 values per > decade if you must use catalog inductors. Which I nearly always have to. > Sometimes even down to 3-4 values because of notorious no-stock > situations. So you de-focus your eyes a bit, squint, and then scoot the > slide rule until a combination of values gets close enough. With a > calculator you'd be typing on blisters pretty soon. > > -- > Regards, Joerg > > http://www.analogconsultants.com/ > > "gmail" domain blocked because of excessive spam. > Use another domain or send PM. Well - if you're twirling your slide rule that fast no wonder it's worn out !! I do a lot of design work but blistered calculator fingers hasn't been a big delay factor so far - I do my best designs on long car journeys on my own so all sums done in my head ! Michael Kellett www.mkesc.co.uk
From: Joerg on 23 Feb 2010 10:02 Lil Red Riding In The Hood wrote: > On Mon, 22 Feb 2010 18:08:09 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > >> Lil Red Riding In The Hood wrote: >>> On Mon, 22 Feb 2010 16:35:15 -0800, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> Maybe I can get a thin layer of PTFE somewhere. >>> >>> A piece of grocery bag or two. Maybe half a mil each layer. >> >> Poly bags? We use those for when our Rottweiler let's one go during our >> walks :-) >> >> But I'll try. > > > > Not the "glassine bag" type, but the type that resists tearing. All the ones around here tear. They are also extremely thin and may soon be taxed out of many CA stores. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Jim Thompson on 23 Feb 2010 10:32 On Tue, 23 Feb 2010 07:02:32 -0800, Joerg <invalid(a)invalid.invalid> wrote: >Lil Red Riding In The Hood wrote: >> On Mon, 22 Feb 2010 18:08:09 -0800, Joerg <invalid(a)invalid.invalid> >> wrote: >> >>> Lil Red Riding In The Hood wrote: >>>> On Mon, 22 Feb 2010 16:35:15 -0800, Joerg <invalid(a)invalid.invalid> >>>> wrote: >>>> >>>>> Maybe I can get a thin layer of PTFE somewhere. >>>> >>>> A piece of grocery bag or two. Maybe half a mil each layer. >>> >>> Poly bags? We use those for when our Rottweiler let's one go during our >>> walks :-) >>> >>> But I'll try. >> >> >> >> Not the "glassine bag" type, but the type that resists tearing. > > >All the ones around here tear. They are also extremely thin and may soon >be taxed out of many CA stores. Gunk Silicone Spray Lubricant Spray onto a paper towel, then apply to where you need it... VERY slippery... MIST falling onto a tile floor may be hazardous to your health ;-) ...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 at http://www.analog-innovations.com | 1962 | I love to cook with wine. Sometimes I even put it in the food.
From: Joerg on 23 Feb 2010 10:46 MK wrote: > "Joerg" <invalid(a)invalid.invalid> wrote in message > news:7ugbsaFh59U1(a)mid.individual.net... >> MK wrote: >>> "Joerg" <invalid(a)invalid.invalid> wrote in message >>> news:7u8t7eFgi2U1(a)mid.individual.net... >>>> 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. >>>> >>>> -- >>>> Regards, Joerg >>>> >>>> http://www.analogconsultants.com/ >>>> >>>> "gmail" domain blocked because of excessive spam. >>>> Use another domain or send PM. >>>> >>> Buy a calculator - been around more than 30 years now - some of them >>> pretty good. >>> >>> Mine's an HP32S which works in RPN so has enough obscurity factor to put >>> off casual borrowers ! >>> >> Got that, a HP11C. However, when calculating part value ratios a slide >> rule is more practical because you typically only have 6 or 12 values per >> decade if you must use catalog inductors. Which I nearly always have to. >> Sometimes even down to 3-4 values because of notorious no-stock >> situations. So you de-focus your eyes a bit, squint, and then scoot the >> slide rule until a combination of values gets close enough. With a >> calculator you'd be typing on blisters pretty soon. >> >> -- >> Regards, Joerg >> >> http://www.analogconsultants.com/ >> >> "gmail" domain blocked because of excessive spam. >> Use another domain or send PM. > > Well - if you're twirling your slide rule that fast no wonder it's worn out > !! > I am a little more patient with slide rules than with calculators and computers. But just a little more. So far I've only worn out one, a linear slide rule. It got to the point where the slider fell out when you held it upside down. > I do a lot of design work but blistered calculator fingers hasn't been a big > delay factor so far - I do my best designs on long car journeys on my own so > all sums done in my head ! > I do that in the evenings sometimes. Occasionally my wife then scolds me "See, you didn't listen again!" :-) Hey, you don't want to move to Florida to a client of mine, do you? You'd get out of the dreaded wet UK winters, usually they do not have winters there. Ok, except for this year. -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM.
From: Joerg on 23 Feb 2010 11:04
Jim Thompson wrote: > On Tue, 23 Feb 2010 07:02:32 -0800, Joerg <invalid(a)invalid.invalid> > wrote: > >> Lil Red Riding In The Hood wrote: >>> On Mon, 22 Feb 2010 18:08:09 -0800, Joerg <invalid(a)invalid.invalid> >>> wrote: >>> >>>> Lil Red Riding In The Hood wrote: >>>>> On Mon, 22 Feb 2010 16:35:15 -0800, Joerg <invalid(a)invalid.invalid> >>>>> wrote: >>>>> >>>>>> Maybe I can get a thin layer of PTFE somewhere. >>>>> A piece of grocery bag or two. Maybe half a mil each layer. >>>> Poly bags? We use those for when our Rottweiler let's one go during our >>>> walks :-) >>>> >>>> But I'll try. >>> >>> >>> Not the "glassine bag" type, but the type that resists tearing. >> >> All the ones around here tear. They are also extremely thin and may soon >> be taxed out of many CA stores. > > Gunk Silicone Spray Lubricant > > Spray onto a paper towel, then apply to where you need it... VERY > slippery... MIST falling onto a tile floor may be hazardous to your > health ;-) > .... or as you mentioned in another post ... slip ... *SPLAT* :-) -- Regards, Joerg http://www.analogconsultants.com/ "gmail" domain blocked because of excessive spam. Use another domain or send PM. |