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11-13-2008, 02:54 AM
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Rigging Catenary
Anyone have any good ideas on how to simulate rigging line catenary?
For those of you making a face thinking, " What's 'Catenary'?" Catenary is the natural sag in a line from its own weight even while under tension. Rigging line in the kits doesn't have enough mass to sag when tightened. So I was wondering how the pros here do it.. 
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11-13-2008, 07:17 AM
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Re: Rigging Catenary
Stiffen with white glue works well. You may have to paint afterwards with flat black, but the glue will stiffen the line enough for a "sag" effect. Take a look at this article - Rigging Steps (open in a blank window)
Keep in mind the scale of your model. Too much or too little "sag" will look out of place with the rest of the model. I always do some practice runs, so to speak, until the sag looks good. I once tried cyano glue to stiffen lines for sag, but it leaves a crystline finish to the line. Hot waxing the line also works. Try a method and see what works and looks best to you. Cheers, John
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11-13-2008, 07:58 AM
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Re: Rigging Catenary
DS: Agree with john. Also, try looking at fabric glues; These products are advertised as leaving no "residue". Available in fabric stores, Michaels, and other "craft" stores.
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11-13-2008, 09:39 AM
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Re: Rigging Catenary
I wonder if this method would also work to establish the natural sag of lines where they are belayed. I really don't like the look of lines with their loops 'sticking out' and on a real ship the weight of the lines make them hang naturally in a sort of droop. Thread doesn't have enough weight to hang in a realistic fashion.
Richard 
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Any fool can carry on, but a wise man knows how to shorten sail in time. Joseph Conrad
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11-13-2008, 03:37 PM
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Re: Rigging Catenary
Thanks for the suggestions..
I've used a water/white glue solution for coiling the extra line to hang on the belaying pins for a natural look, or making the Belgian deck coils.. and it works really well.. I never thought of using the same process for the sag effect.. Thanks, Mateys
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11-13-2008, 11:08 PM
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Re: Rigging Catenary
Hello all,
I've tried several methods and tend to believe in experimentation. Sometimes it works other times not, until you've tried, well how do you know? In the image of the Latham (fishing schooner) below, I used diluted carpenter's glue and temporary weights on the anchor cable but stuck (no pun intended) to small quantities of full strength carpenter's glue for the coils of rope on the rails and deck. I generally prefer to avoid diluting the glue as it weakens the bond and delays the set preferring instead to use small full strength applications judiciously applied. In the image of the Prince de Neufchatel below, simple gravity produced a pretty effective sag on the main braces and time and gravity have worked well on several of the stays. At first the sagging stays seemed alarming, but I've come to accept the sag as natural and effective. Finally, there's patience. With the kit cordage, which is often synthetic, it seems to take gravity a long time to smooth out kinks. Regards Jim  (open in a blank window) (open in a blank window)
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