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Forum topic by Owebman posted 09-01-2013 07:45 PM 1614 views 0 times favorited 13 replies Add to Favorites Watch
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Owebman

6 posts in 1191 days


09-01-2013 07:45 PM

Topic tags/keywords: slide rule

Hello Forum,
I’m interested in producing / manufacturing slide rules for very unique market (as you must know, no one is using slide rules any more). i’m looking for resources of knowledge and abilities (I have none, I just came up with this great idea). It looks like that you guys must be a great source for knowhow. In short I’m looking for help with final design and manufacturing.
Appriciate all the help
Ofer


13 replies so far

View MrRon's profile

MrRon

3926 posts in 2703 days


#1 posted 09-02-2013 07:41 PM

A good slide rule is made of a very stable hardwood that has a plastic scale laminated to it. The slide has a tongue that slides in a groove (top and bottom). Using today’s technology, it’s possible to make them using CNC machines. The scales can be printed using CNC. They can then be laminated unto good dry hardwood (or bamboo). Some good slide rules were made in aluminum (Pickett). That would be a snap for CNC. The older Heuffer and Essel slide rules were made of mahogany with a plastic overlay. I still have mine from 60 years ago. Most people today wouldn’t even know what ther are.
I’m curious as to what market would be interested in slide rules.

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Owebman

6 posts in 1191 days


#2 posted 09-03-2013 03:41 AM

MrRon, thank you for your reply. I own Keuffer & Esser, made of mahogany with plastic overly and I love the feel of it.
I developed a slide rule that can be use by todays musicians and I’m looking to manufacture it with the feel and quality of an old style wooden slide rule. Would you know to guide me where to go or whom to contact to manufacture such product?

View Loren's profile

Loren

8294 posts in 3107 days


#3 posted 09-03-2013 05:02 AM

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Owebman

6 posts in 1191 days


#4 posted 09-03-2013 05:40 AM

Thanks, but I’m looking to produce a complete new design, starting from scratch

View Loren's profile

Loren

8294 posts in 3107 days


#5 posted 09-03-2013 05:42 AM

Good luck with that. You’ll need some 4 figure capital I
reckon to get to prototyping. Production will probably
be a 5-figure investment. Hiring an an old time
die-maker as a consultant would probably lead to ideas
where to start with development and tooling.

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MrRon

3926 posts in 2703 days


#6 posted 09-03-2013 04:51 PM

Will this slide rule process numbers to any degree of accuracy, or will it be more of a cross reference guide? Are we talking something with numerical accuracy?

View Don Broussard's profile (online now)

Don Broussard

3019 posts in 1711 days


#7 posted 09-03-2013 05:51 PM

I used a slide rule in engineering school, and I know I can’t find my original. I actually bought a slide rule with its case a few months ago for its “romantic” value. I almost bought the large (6’ long) slide rule that the professors used to demonstrate the use of the slide rule several years ago, but I didn’t—that would have made a cool wall decoration. IMHO, and with no intention of poopooing your idea, the highest value of a slide rule nowadays is to stir paint.

-- People say I hammer like lightning. It's not that I'm fast -- it's that I never hit the same place twice!

View HorizontalMike's profile

HorizontalMike

7143 posts in 2373 days


#8 posted 09-03-2013 06:02 PM

Geez Don,
Just the right size! THAT 6’ long one would at least have big enough markings for this old man’s eyes!

-- HorizontalMike -- "Woodpeckers understand..."

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Owebman

6 posts in 1191 days


#9 posted 09-03-2013 07:25 PM

Loren, I already have a first CAD iteration of the product which is pretty close to the final product. Thanks to 3D printing technology, it is possible to print from CAD a working prototype for few hundred dollars. I also have a working prototype from wood I just finished building

MrRon, the answer to your question ”Are we talking something with numerical accuracy?” is no, there is no need for engineering accuracy, and the smallest unit in this slide rule (and there is only one unit size) is around 9mm.

Don, i get your point regarding the value of slide rule these days, but this instrument is not for engineering or math, but for music making. I believe that i am designing a tool that can help millions of musicians.

Mike, you gave me a good lough with this picture :-)!

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Sylvain

639 posts in 1959 days


#10 posted 09-05-2013 06:21 PM

Musicans have their rules :

look at
(in French)
http://linealis.org/article56.html

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn

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Owebman

6 posts in 1191 days


#11 posted 09-05-2013 06:45 PM

Sylvain, thank you so much. Great information, this is an amazing site!
My rule is very different, target mostly fretted instruments such as guitars, Uka & mandolin

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Sylvain

639 posts in 1959 days


#12 posted 09-06-2013 04:54 PM

Also
found this
http://www.freepatentsonline.com/5597969.html

-- Sylvain, Brussels, Belgium, Europe - The more I learn, the more there is to learn

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Owebman

6 posts in 1191 days


#13 posted 09-06-2013 05:24 PM

Thanks Sylvain, I followed this one and found many more! none is like mine… but I definitely need to consult my lawyer… Many thanks again!

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