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Jennifer Mitol
(Jenmitol) - M

Locale: In my dreams....
Burning ends of things on 11/28/2013 10:33:29 MST Print View

Happy thanksgiving everyone!! And let me begin by saying I am embarrassed to ask this question. But I'm going to do it anyway.

Is there some secret trick to burning the ends of guy lines and nylon webbing to keep it from fraying? I hold the flame to the end, watch it melt a bit...but doesn't seem to matter. Either I'm not holding it long enough, or there is a super secret somewhere...but what am I missing? The burnt end STILL frays all over the place. And it never looks as good as the ends of stuff I buy (before I cut it).

I'm currently struggling with some of Lawson's glowire that just WILL NOT stay all nubby at the end.

Help!!

Greg Mihalik
(greg23) - M

Locale: Colorado
Re: Burning ends of things on 11/28/2013 10:42:06 MST Print View

The Kevlar/Spectra/Dyneema cores will not melt like the poly sheath, or solid nylon.

Melt the sheath, and using a folded paper towel, wipe the HOT! sheath over the end to enclose the core. (Pull the line through the towel or the towel over the line, don't "dab".)

Edited to add: Sometimes I pull the sheath down a bit, cut off the core, slide the sheath up, then melt down to the core. Be sure you melt a bit of the core and capture it in the sheath bead.

Edited by greg23 on 11/28/2013 10:50:08 MST.

scree ride
(scree)
hot knife? on 11/28/2013 10:43:01 MST Print View

I usually don't have trouble with the cords. I've been heating an old butter knife to use for cutting strap. It may work on the cords as well.

spelt !
(spelt) - F

Locale: SW/C PA
my way on 11/28/2013 11:12:02 MST Print View

Heat with lighter, pinch and roll between fingers or over thigh. Repeat multiple times until there is a solid melty bit at the end. If you're smart you'll wear leather work gloves and pants. If you're not, we might be related. ;)

Edited by spelt on 11/28/2013 11:13:46 MST.

eric chan
(bearbreeder) - F
snip snip on 11/28/2013 11:35:55 MST Print View

snip the webbing/cord normally

burn with a lighter for a few seconds

thats all there is ...

i do it all the time for climbing webbing/cord/ropes

;)

Dale Wambaugh
(dwambaugh) - MLife

Locale: Pacific Northwest
Re: Burning ends of things on 11/28/2013 12:04:28 MST Print View

Pulling the jacket out a bit can work. A propane torch has a hotter point and seems to do a better job. I have a Master MT-5 Microtorch that makes a Bic lighter seems like a candle and burns at 2500F.

master MT-5

The kitchen style torches used for creme brûlée work well for rope as you can lock it on and set it on the bench, leaving both hands free. Master Appliance makes several variations on that theme.

http://www.masterappliance.com/heat-tool-products/butane-products/microtorches

Greg Mihalik
(greg23) - M

Locale: Colorado
Re: Re: Burning ends of things on 11/28/2013 13:29:09 MST Print View

"The burnt end STILL frays"

Maybe semantics are getting in the way again...

You don't want to BURN the end, you only want to Melt it.

If you are indeed turning it into black ash, that is the problem.

Roger Caffin
(rcaffin) - BPL Staff - MLife

Locale: Wollemi & Kosciusko NPs, Europe
'Burning' is the wrong approach on 11/28/2013 13:59:36 MST Print View

Hi Jennifer

As Greg pointed out, you don't want to 'burn' the end; you want to melt it. The stuff you are using does not melt in the simple manner you get with nylon: it shrivels up like mad. That's due to how it was made. It's called 'grain-oriented'.

Too much heat is usually bad with this stuff. Go for the minimum amount of heat needed.

Try melting the end of the string with a soldering iron or a hot knife or even the element on an electric stove. Failing that you could try impregnating the end in epoxy or similar.

Cheers

Bob Gross
(--B.G.--) - F

Locale: Silicon Valley
Re: 'Burning' is the wrong approach on 11/28/2013 14:09:13 MST Print View

"the element on an electric stove"

That works every time for me.

--B.G.--

David Thomas
(DavidinKenai) - MLife

Locale: North Woods. Far North.
Re: Burning ends of things on 11/28/2013 14:14:42 MST Print View

Rather than paper towels to form the aglet at the end, I suggest solid paper (folded newspaper, computer paper or card stock). I use a beater leather gloves for this and several other abusive tasks. There's a box of "Mismatched Work Gloves" in my garage for such tasks.

Bob Gross
(--B.G.--) - F

Locale: Silicon Valley
Re: Re: Burning ends of things on 11/28/2013 14:16:56 MST Print View

"card stock"

How about IBM computer punch cards?

--B.G.--

Dale Wambaugh
(dwambaugh) - MLife

Locale: Pacific Northwest
Re: coating the ends of things on 11/28/2013 14:42:15 MST Print View

I have used hot glue to whip the ends of Kevlar mule tape. It was easy to trim to a clean form when cool. Silnet works too. You can find cans of gobbletygoop in marine supply stores for dipping lines in.

The term for this is whipping. The traditional way was to wrap the ends with small line or tough thread along with the right knots or stitching.

Greg Mihalik
(greg23) - M

Locale: Colorado
Re: Re: coating the ends of things on 11/28/2013 14:48:33 MST Print View

The term for employing glue/silnet/gobbletygook is Dipping.


"The traditional way was to wrap the ends with small line ..." - and is called Whipping.


If I may be bold as to try to preserve the meaning of words...

Edited by greg23 on 11/28/2013 14:50:02 MST.

Jennifer Mitol
(Jenmitol) - M

Locale: In my dreams....
Exactly what I was looking for!! on 11/28/2013 15:20:13 MST Print View

Yes, I was trying to melt it without burning...but it never seemd to melt (zpacks spectra and Lawson's glowire to be specific).

The sheath always seemed to shrink, then the white threads inside just stuck out and they did not turn into a nice knob at the end. I will try a few of these suggestions, since obviously just holding the end in the flame of a bic just doesn't seem to work for me.

Thanks again!!!

Edited by Jenmitol on 11/28/2013 15:21:35 MST.

michael levi
(M.L) - F

Locale: W-Never Eat Soggy (W)affles
re on 11/28/2013 17:55:06 MST Print View

Pull the dyneema stand down and use a lighter and pair of pliers to crimp the end of the outer.

Roger Caffin
(rcaffin) - BPL Staff - MLife

Locale: Wollemi & Kosciusko NPs, Europe
Re: Exactly what I was looking for!! on 11/28/2013 19:03:13 MST Print View

Hi Jennifer

> The sheath always seemed to shrink, then the white threads inside just stuck out and
> they did not turn into a nice knob at the end.
Ah - the plot thickens. What happened to the core threads? Did they char instead of melting?

Cheers

David Olsen
(oware)

Locale: Steptoe Butte
Phineas and Ferb - A-G-L-E-T on 11/28/2013 19:22:25 MST Print View

"Phineas: Through the eye of the needle
Time to loosen your tongue
Got a tip how to make ends meet
Singers (and crowd): A-G-L-E-T, don't forget it!"


http://www.youtube.com/watch?v=q0KrkkL6AXo

Jennifer Mitol
(Jenmitol) - M

Locale: In my dreams....
Re: Re: Exactly what I was looking for!! on 11/29/2013 12:06:20 MST Print View

"Ah - the plot thickens. What happened to the core threads? Did they char instead of melting?"

Well Roger, the tips kind of glow a bit, then just turn black. Which crumbles away, and i still have a frayed end. I can watch the cord shorten…but no nice nubby bit. I've tried rolling it between my fingers, but that never worked except to knock off all the hardened bits…

I'm looking forward to trying a few of these ideas.

eric chan
(bearbreeder) - F
Re: Re: Re: Exactly what I was looking for!! on 11/29/2013 12:26:04 MST Print View

if its dyneema core .... simply cut it then dip it into seam grip, crazy glue, etc ... you can also use a heat shrink wrap

dyneema has a MUCH lower melting point than aramid (nylon used for climbing ropes) ... which is why they generally arent recommended for friction hitches in safety situatiions ...

;)

Andy F
(AndyF) - M

Locale: Midwest/Midatlantic
Re: Burning ends of things on 11/29/2013 13:31:28 MST Print View

Just stop playing with fire and get out and hike! :D