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(@jered-mcgrath-pls)
Posts: 1376
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> The island we live Kauai is the oldest of the island chains. So no active volcanos. 🙂 It is an awesome place!

Been there twice and absolutely love that place.:-D Great monuments and actions shots.;-) Thanks for posting!:hi5: Cheers.

 
Posted : July 22, 2014 7:15 am
(@carl-b-correll)
Posts: 1910
 

> How did you manage to drill out the tops of those spindles? In my thinking, they are very hard metal, and would require some SERIOUS clamping, drill press, and maybe some broken drill bits!
>
> Are they only control, or are they for corners?
>
> Thanks for sharing the pics.
>
> Nate

Nate, here is the link to the Hayes page for them, but I think their photo is a bit of a comical rendering of them. Gin Spikes

These are in my office that I bought from Hayes. One is "drilled out" (or probably cast like that) and one actually has the letter J struck into it somehow. I doubt these new fangled Cotton Gin Spikes were ever actually used on farm equipment, but the design was basically copied and upgraded for surveyors to use as monumentation.

Carl

 
Posted : July 22, 2014 7:39 am
(@nate-the-surveyor)
Posts: 10522
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Carl, I have a pile of them with the "J" on them. Never seen the kind with just a hole there.

I suspect that those are the real thing... because there are were lines, where the bushing used to be. This would be on the shiny part, below the gear, about 1-2" down. I have some with the bushing still on them. Knock them apart, before using.

N

 
Posted : July 22, 2014 8:07 am
(@carl-b-correll)
Posts: 1910
 

> Carl, I have a pile of them with the "J" on them. Never seen the kind with just a hole there.
>
> I suspect that those are the real thing... because there are were lines, where the bushing used to be. This would be on the shiny part, below the gear, about 1-2" down. I have some with the bushing still on them. Knock them apart, before using.
>
> N

Still don't think so. These two things are EXACTLY identical, except for the "J" / dimple in the top difference. I guess it really doesn't matter, but I just don't think any of these things that I have have ever been on a piece of farming equipment. I think they were cast for surveying monumentation... or at least altered from new for that.

Carl

 
Posted : July 22, 2014 8:13 am
(@mapman)
Posts: 651
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As unique as they are, I have heard in California we are asked not to use them because they don't get detected by metal detectors. I've never tested that. I have some and it wouldn't be had to find out. They must be of an alloy that is non-magnetic.

 
Posted : July 22, 2014 8:59 am
(@imaudigger)
Posts: 2958
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Stainless steel? I've never seen a rusty cotton spindle.

Better check that...maybe have to include a magnet somewhere so they are detectable...

 
Posted : July 22, 2014 9:08 am
(@nate-the-surveyor)
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The ones we have make the detector sing like crazy. They are very hard steel. They are a bit brittle, though, and can break.

N

 
Posted : July 22, 2014 9:14 am
(@scotland)
Posts: 898
Customer
 

Those look great and will be a huge find for future surveying.

As for the cotton pickers (spindles), I know our spindles are can be found by metal detectors. A Youtube video gives you a look at how they work.

 
Posted : July 22, 2014 9:23 am
(@mapman)
Posts: 651
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Well if they "sing" then I don't know why they are frowned on. Unless it is the brittle nature of the metal. Someone must have hurt themselves. If set in concrete like yswami did then I would think they would be fine. Need to research that a bit.

@Yswami: By the way I liked the auger used to set the monuments. I use a smaller version to get them started. A 3" on a 1/2" hammerdrill. Works great. Nice work there!

 
Posted : July 22, 2014 9:29 am
(@spledeus)
Posts: 2772
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Did you add any metal other than the gin pin? How well do those light up with a magnetic locator? If well, then you are all set, if not so well, throw a piece of scrap metal in the concrete. Or a magnet.

 
Posted : July 22, 2014 9:32 am
(@mapman)
Posts: 651
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Great video! Explains what those things were used for very nicely. Always did wonder how they were used in the original equipment. Thanks for sharing.

 
Posted : July 22, 2014 9:39 am
(@yswami)
Posts: 948
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Topic starter
 

> Thanks for the reply.
> Yes Least squares and solar observation are very good math calisthenics for the surveyor.
> solar observations will ties your surveys to the cosmos wich in a metaphysical sense may intrigue you.
> Least squares will connect you to Gauss and control surveys of yesteryear Europe.

Aloha, Robert:
You definitely got that right...I always see the metaphysical part of any external work I am involved in.

I will admit math is not my strong point. But I will learn and do the necessary. I enjoy it when it is not just a theory. It intrigues me when math applied in day to day application in a tangible manner as in surveying.

Nothing is impossible with some many of you to mentor!

 
Posted : July 22, 2014 10:53 am
(@yswami)
Posts: 948
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Topic starter
 

> > The island we live Kauai is the oldest of the island chains. So no active volcanos. 🙂 It is an awesome place!
>
> Been there twice and absolutely love that place.:-D Great monuments and actions shots.;-) Thanks for posting!:hi5: Cheers.

Thanks Jared! Let me know you make your next visit to the islands!

 
Posted : July 22, 2014 10:55 am
(@yswami)
Posts: 948
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Topic starter
 

> Those look great and will be a huge find for future surveying.
>
> As for the cotton pickers (spindles), I know our spindles are can be found by metal detectors. A Youtube video gives you a look at how they work.

Aloha, Scotland:
Thank you and great a video! Now I know what these spindles first use were before they become survey marker--their real use:-D

 
Posted : July 22, 2014 10:58 am
(@yswami)
Posts: 948
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Topic starter
 

> Stainless steel? I've never seen a rusty cotton spindle.
>
> Better check that...maybe have to include a magnet somewhere so they are detectable...

Aloha, Imaudigger:
Everything rust in Hawaii!!! I think they are chromed. I do see rust on the area where dimple is. It is the portions that wore out it think during cotton harvesting process. My metal detector beeps like crazy! So it is a ferrous material.

 
Posted : July 22, 2014 11:01 am
(@yswami)
Posts: 948
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> Did you add any metal other than the gin pin? How well do those light up with a magnetic locator? If well, then you are all set, if not so well, throw a piece of scrap metal in the concrete. Or a magnet.

Aloha, Spledeus:
I thought about adding rebar but I didn't do it. These pins light up very well with magnetic locator. They are definitely are being detected much faster and precisely compared with Mag or PK nails--within my limited surveying experience of course 😉

 
Posted : July 22, 2014 11:06 am
(@yswami)
Posts: 948
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Aloha,
My theory is, the ones with J is new. The other one is after they wore out. They seems to spinning pretty fast in the video Scotland posted above.

 
Posted : July 22, 2014 11:08 am
(@andy-j)
Posts: 3121
 

They look great!! My only thought would be for all the effort to make and set them, I would have put brass or aluminum disks instead of the plastic, just for longevity.

edit...Those look like plastic, but maybe they are metal?? Can't tell for sure on second look.

Andy

 
Posted : July 22, 2014 11:14 am
(@tom-wilson)
Posts: 431
Customer
 

"I thought about adding rebar but I didn't do it."

No re-bar, the frost is going to kill them. Oh that's right you live in Paradise and no frost. I am being sinful with envy, sorry can't help it.

Actually your monuments look really good and should serve you well. Keep working on your project, you have come a long way since you started.

T.W.

 
Posted : July 22, 2014 11:20 am
(@carl-b-correll)
Posts: 1910
 

> They look great!! My only thought would be for all the effort to make and set them, I would have put brass or aluminum disks instead of the plastic, just for longevity.
>
> edit...Those look like plastic, but maybe they are metal?? Can't tell for sure on second look.
>
>
> Andy

HUB DISC: 40 mil. plastic, yellow one side, fluorescent orange other side

http://www.hayesinstrument.com/cgi-bin/webc.cgi/st_prod.html?p_prodid=2682

 
Posted : July 22, 2014 11:28 am
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