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From: Casey Jorgensen <scjorg_at_hotmail.com>
subject: [Paddlewise] working w/neoprene
Date: Tue, 05 Feb 2002 14:39:10 -0500
Hi PaddleWisers,

I want to make neoprene cockpit covers for myself and a friend and need some 
paddle wisdom.  Most of what I've read talks about glueing the neoprene with 
cement.  Is this preferable to sewing, or do you recommend sewing *and* 
glueing?

Will sewing compromise the strength of the material? And, can a household 
machine handle neoprene?  Does glueing with the right cement create a strong 
enough bond alone?  so many questions!

Many thanks for any help,
S Casey Jorgensen

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From: Michael Daly <michaeldaly_at_rogers.com>
subject: Re: [Paddlewise] working w/neoprene
Date: Wed, 6 Feb 2002 00:21:12 -0500
From: "Casey Jorgensen" <scjorg_at_hotmail.com>

> I want to make neoprene cockpit covers for myself and a friend and need some 
> paddle wisdom.  Most of what I've read talks about glueing the neoprene with 
> cement.  Is this preferable to sewing, or do you recommend sewing *and* 
> glueing?

A cockpit cover or a skirt?  I've made several cockpit covers out of 
coated nylon pack cloth (approx 400 denier).  This is more than 
adequate; I think neoprene would be overkill.  I just trace the 
outline of the coaming and add a couple of inches all round.  I then 
roll the edge to make a generous hem.  At the back, a large buttonhole 
allows a length of bungie cord to run through the hem and out the cover.
I use a cordlock to allow the bungie to be tightened and attach a
length of webbing with a hook to the front.  This hook attaches to 
the deck bungies, just in case.  Once the bungie is tightened, it
holds snug.  I've had no problems with the covers on the composite
sea kayaks, but the cover on my plastic WW kayak once slipped off
while driving - the webbing and hook held it on (I had loaded the 
kayak with gear, including a friend's improperly stuffed sleeping
bag - the bag started expanding and popped the cover!)

> Will sewing compromise the strength of the material? 

Yes, but probably not significantly.  Many neoprene products are sewn.

> And, can a household machine handle neoprene?  

Not likely,  I've not been able to get two layers of 3mm neoprene under 
the presser foot - there's not enough room.  I hadn't tried using a zigzag
stitch and just butting the edges of the neoprene together.  Perhaps a very 
light neoprene (1-2 mm) would work.  Unless you have a real need for neoprene,
I'd recommend going with cheaper and easier to work with nylon.

Mike



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From: Blaauw, Niels <nblaauw_at_foxboro.com>
subject: RE: [Paddlewise] working w/neoprene
Date: Wed, 6 Feb 2002 06:53:57 -0500
Casey wrote: >>> Will sewing compromise the strength of the material? And,
can a household 
machine handle neoprene? <<<

I once modified a 3 mm wetsuit on a household sewing machine. It worked OK.
Since the neoprene is covered with some kind of fabric, there is no risk of
damaging the material so much it will loose its strength.

A problem is, that my machine can NOT handle a double layer of neoprene. I
had to put the pieces side by side and attach them with the broadest zigzag
( Is that understandable English?). This means you can put together two
seperate pieces of neoprene, but it is not possible to make a tube, like you
would need for a shirt or pants.

In the case of a neoprene cover, you'd have to attach a bungy to the
neoprene. That can't be done on a household sewing machine, at least not on
mine. I make a lot of my own clothes, including paddling clothes, but a
hatch cover I would get from the store.

Niels.

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From: Jochen Grikschat <grikschat_at_surfeu.de>
subject: [Paddlewise] working neoprene - hatch cover - sprayskirts
Date: Wed, 6 Feb 2002 15:05:01 +0100
> In the case of a neoprene cover, you'd have to attach a bungy to the
> neoprene. That can't be done on a household sewing machine, at least not
on
> mine. I make a lot of my own clothes, including paddling clothes, but a
> hatch cover I would get from the store.

Not me!
I fI need a hatch cover (without the necessarity to be waterproof), I put
the stuff over the bungee and sew it behind, so the bungee runs free inside
the tube (?). Thats enough and works quite well.
I sew my own sprayskirts also. Then I HAVE to sew a bungee to the stuff and
thats a little bit more complicate, for sure.
But after some thinking, itīs no problem at all.
Sew it by hand!
I take a 8mm bungee and fix the one end, stretch it to the strength I like
to have for my sprayskirt (an da little bit more) and fix it also. Then I
start sewing the sprayskirt to the bungee with a hand sewing awl (comes from
the US) you can get by sailors equipment. The hand sewing thread is a very
durable waxed nylon thread, which holds a lot. The needle is a special
salimaking needle. The thread runs from inside the wal throught the head and
along the needle and at the top through itself.
Start at the middle back part of the sprayskirt, stitch quite normal in
about 5mm wide stitches. With the hand sewing awl you can make the SAME
stitch pattern like by an sewing machine, donīt pull to much, when the
bungee will be re-stretched the seam wil be strong enough.
Only problem are the round areas on the sprayskirt. The bungee is stretched
in a line and within the round parts you canīt gon on with sewing. So on
every sprayskirt I have to re-stretch the bungee about 5-9 times and have to
stretch it again, but th enew end for the bungee fixed to something is the
point 2cm where you had sewed yet, then you can sew the bungee for a while
(depends on the roundness/pattern of the sprayskirt) until you have to
re-stretch again aso...

This System is also easy to repair sprayskirts where the bungee had gone of.
You only have to stretch the bungee until the sprayskirt stuff is running a
line, fix it and sew the bungee. You donīt have to buy a new one.
Iīve used my canoe-polo sprayskirt quite a long time, but Iīve never got
problems with the bungee, it always fits 100 per cent on the cockpit.

Itīs a little bit hard for me to explain it in english, normally its hard
enough in german. :-)))
On every new hand sewing awl is a well understandable instruction how to
use. But Iīve seen a friend who was unable to understand it, so if there are
some questions left, ask me and I will do my very best :-))

best regards
Jochen

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From: Jochen Grikschat <grikschat_at_surfeu.de>
subject: [Paddlewise] working neoprene - hatch cover - sprayskirts
Date: Wed, 6 Feb 2002 15:05:01 +0100
> In the case of a neoprene cover, you'd have to attach a bungy to the
> neoprene. That can't be done on a household sewing machine, at least not
on
> mine. I make a lot of my own clothes, including paddling clothes, but a
> hatch cover I would get from the store.

Not me!
I fI need a hatch cover (without the necessarity to be waterproof), I put
the stuff over the bungee and sew it behind, so the bungee runs free inside
the tube (?). Thats enough and works quite well.
I sew my own sprayskirts also. Then I HAVE to sew a bungee to the stuff and
thats a little bit more complicate, for sure.
But after some thinking, itīs no problem at all.
Sew it by hand!
I take a 8mm bungee and fix the one end, stretch it to the strength I like
to have for my sprayskirt (an da little bit more) and fix it also. Then I
start sewing the sprayskirt to the bungee with a hand sewing awl (comes from
the US) you can get by sailors equipment. The hand sewing thread is a very
durable waxed nylon thread, which holds a lot. The needle is a special
salimaking needle. The thread runs from inside the wal throught the head and
along the needle and at the top through itself.
Start at the middle back part of the sprayskirt, stitch quite normal in
about 5mm wide stitches. With the hand sewing awl you can make the SAME
stitch pattern like by an sewing machine, donīt pull to much, when the
bungee will be re-stretched the seam wil be strong enough.
Only problem are the round areas on the sprayskirt. The bungee is stretched
in a line and within the round parts you canīt gon on with sewing. So on
every sprayskirt I have to re-stretch the bungee about 5-9 times and have to
stretch it again, but th enew end for the bungee fixed to something is the
point 2cm where you had sewed yet, then you can sew the bungee for a while
(depends on the roundness/pattern of the sprayskirt) until you have to
re-stretch again aso...

This System is also easy to repair sprayskirts where the bungee had gone of.
You only have to stretch the bungee until the sprayskirt stuff is running a
line, fix it and sew the bungee. You donīt have to buy a new one.
Iīve used my canoe-polo sprayskirt quite a long time, but Iīve never got
problems with the bungee, it always fits 100 per cent on the cockpit.

Itīs a little bit hard for me to explain it in english, normally its hard
enough in german. :-)))
On every new hand sewing awl is a well understandable instruction how to
use. But Iīve seen a friend who was unable to understand it, so if there are
some questions left, ask me and I will do my very best :-))

best regards
Jochen

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From: Dave Kruger <dkruger_at_pacifier.com>
subject: Re: [Paddlewise] working w/neoprene
Date: Thu, 07 Feb 2002 08:04:17 -0800
Casey Jorgensen wrote:

> I want to make neoprene cockpit covers for myself and a friend and need some 
> paddle wisdom.  Most of what I've read talks about glueing the neoprene with 
> cement.  Is this preferable to sewing, or do you recommend sewing *and* 
> glueing?

Others have pretty much covered the bases on this.  I suspect Casey wants his
cockpit covers to remain tight, hence the neoprene.  If that's your aim, Casey,
consider a strip of neoprene separating the center nylon piece from a second
piece of nylon forming the tube the bungie runs in.  The neoprene will stretch
and tension the whole cover.  More work than a one-piece, and two seams to
seal, but what the hell, it's winter.  At least you haven't any hides to chew!
<joke>

I'm certain a home sewing machine will handle a neoprene/coated nylon
overlapped seam.  Use a walking foot to ease the stitching.  Like others, I
have no confidence in doing two layers of neoprene on a home machine.  I
predict lots of frustration and cursing if you try.

For the record, Penny Schwyn did a bang-up job installing a relief zipper in a
farmer john wet suit about five years ago.  Not sure she is still doing
neoprene.  If I had to join neoprene slabs, I'd Aquaseal the edges together,
run a wide zig-zag stitich to enclose the seal, then lay on a thin coating of
Aquaseal (to the outside if this seam will contact your flesh).  The last
ensures the needle pricks do not cause leakage.

Penny's Web site has a wealth of tips and info on outdoor sewing: 
http://www.specialtyoutdoors.com./

--
Dave Kruger
Astoria, OR
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