I
nternet gathering place for custom rod builders
  • Custom Rod Builders - This message board is provided for your use by the sponsors listed on the left side of the page. Feel free to post any question, answers or topics related in any way to custom building. When purchasing products please remember those who sponsor this board.

  • Manufacturers and Vendors - Only board sponsors are permitted and encouraged to promote and advertise products on the board. You may become a sponsor for a nominal fee. It is the sponsor fees that pay for this message board.

  • Rules - Rod building is a decent and rewarding craft. Those who participate in it are assumed to be civilized individuals who are kind and considerate in their dealings with others. Please respond to others in the same fashion in which you would like to be responded to. Registration IS NOW required in order to post. You must include your actual First and Last name and a correct email address when registering or posting. Posts which are inflammatory, insulting, or that fail to include a proper name and email address will be removed and the persons responsible will be barred from further participation.

    Registration is now required in order to post. You must include your actual First and Last name and a correct email address when registering or posting.
SPONSORS

2022 ICRBE
EXPO ON FACEBOOK
CCS Database
Int. Custom Rod Symbol
Common Cents Info
American Tackle
Anglers Rsrc - Fuji
BatsonRainshadowALPS
BRC Rods
Banana River Rods
Cork Specialties LLC
CRB
HNL Rod Blanks–CTS
CTS New Zealand
Custom Fly Grips LLC
Decal Connection
Flex Coat Co.
HFF Custom Rods
HYDRA
Janns Netcraft
Lucas Mfg Co.
Mickel's Custom Rods
My Rod Shop
Mudhole Custom Tackle
MHX Rod Blanks
North Fork Composites
ProProducts
REC Components
ReelSeatBlanks.com
Renzetti Inc.
Rod Builders Warehouse
RodHouse France
RodMaker Magazine
RodMaker Blog
Schneiders Rod Shop
SeaGuide Corp.
Struble Mfg.
Tackleworks
The Rod Room
Trondak U-40
Utmost Enterprises
VooDoo Rods
ZipCast

White line on inside of blank
Posted by: Daniel Nichols (---.sd.sd.cox.net)
Date: July 18, 2021 05:39PM

I'm working on a Calstar BT6460XH.
The blank is short and stiff and my attempts to "find the spline" are getting inconsistent results. I've never been very confident on my ability to find the spine via the "bend it, roll it, and mark where it stops" method.

As I was sighting along the blank, I noticed that there's a distinct white line running the length of the inside.
I assume this is where the fiberglass roll was joined.
If so...is this the spline?

I can post a pic if someone can enlighten me as to how.

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Tom Kirkman (Moderator)
Date: July 18, 2021 07:52PM

The spine is not a physical thing - it is an effect created by various manufacturing anomalies. And it really plays no role in rod performance. I suggest you read this: [www.rodbuilding.org]

The white line is most likely the initial tack of the prepeg pattern to the mandrel.

....................

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Bill Sidney (---.gci.net)
Date: July 18, 2021 10:00PM

Monday call then an ask , it would not hurt one bit , saying that Ton knows his job very well , so you can trust his comments on your question I think

William Sidney
AK

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Daniel Nichols (---.sd.sd.cox.net)
Date: July 18, 2021 10:00PM

Thank you very much!

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Phil Ewanicki (---.inf6.spectrum.com)
Date: July 19, 2021 09:02AM

Is the "spline" always parallel to the blank or can it be a spiral around the blank?

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Herb Ladenheim (---)
Date: July 19, 2021 09:14AM

No - then they would be called ribs.
Herb

Options: ReplyQuote
Re: White line on inside of blank
Posted by: roger wilson (---)
Date: July 19, 2021 09:56AM

Daniel,
If you can't find a noticeable spine on the rod - there likely isn't a noticeable spine on the blank.

If not building on the spine, just roll the blank on a flat surface to see if there are any slight bends in the rod. If not, rotate the blank however you wish to build your rod.

But, if you note that there is a slight bend somewhere on the blank, then the typical advice is to build on the straightest axis. Your choice as to whether to build with the bend pointing up, or the bend pointing down.

But, likely not a good idea to build with the bend pointing to the side because it is rather common for folks to sight down a rod. They will normally sight down the rod as if they were holding the rod in a conventional manner - i.e. with the guide on either the top or the bottom of the rod. If there is a slight bend in the rod blank, and one sights down the top or the bottom of the rod - the slight apparent is not apparent. But, if one sights down the rod and the bend is to the side, the slight bend may really pop out and bother the owner or user of the rod.


Best wishes

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Tom Kirkman (Moderator)
Date: July 19, 2021 11:50AM

The spine effect does not run along the blank in a straight line or on a particular axis. It rotates around the blank. If you spine the entire blank, you are getting the overall effect on the total length. If you spine it from say, 1/3rd of the way back from the tip, it will be in a different place and will be the overall effect only on that portion of the blank. Again, the spine is not a physical thing.

...........

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Phil Ewanicki (---.inf6.spectrum.com)
Date: July 19, 2021 01:44PM

If the "spine" of a rod blank follows the twist of the graphite or fiberglass cloth threads that comprise the fabric which is a modern fish pole, which part of that twist should I use to locate my straight-line guide train? I prefer science to faith when building rods.

Options: ReplyQuote
Re: White line on inside of blank
Posted by: roger wilson (---)
Date: July 19, 2021 03:23PM

The very best thing to do with the word "spine" and fishing rods and fishing rod blanks is to simply forget about it and won't worry about it.

Build the rod so that when sighting down the rod blank on the side or off side of the guides - the blank is straight and then build the rod.

Best wishes.

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Tom Kirkman (Moderator)
Date: July 19, 2021 04:19PM

Phil Ewanicki Wrote:
-------------------------------------------------------
> If the "spine" of a rod blank follows the twist of
> the graphite or fiberglass cloth threads that
> comprise the fabric which is a modern fish pole,
> which part of that twist should I use to locate my
> straight-line guide train? I prefer science to
> faith when building rods.

The spine effect of a rod blank does not follow "twist" of glass or carbon (most carbon blanks feature a linear lay-up). Rather it is simply the result of about 7 manufacturing anomalies. If those anomalies were not inherent in the way rod blanks are made, there would be no spine effect.


..............

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Lance Schreckenbach (172.58.102.---)
Date: July 19, 2021 04:27PM

Build on the straightest axis, up or down. Spine doesn't matter. If you really just have to, put the rod on solid ground, straight up and push down on the tip. Mark the inside bend, that is the spine.

Options: ReplyQuote
Re: White line on inside of blank
Posted by: Tom Kirkman (Moderator)
Date: July 19, 2021 09:46PM

Outside is the spine - it is the softest/weakest axis.

,,,,,,,,,,,,,,,,

Options: ReplyQuote


Sorry, only registered users may post in this forum.
Webmaster