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From: Jan Mason <td376_at_mail.anonymizer.com>
subject: [Paddlewise] Foam bulkhead sealant removal
Date: Thu, 08 Aug 2002 16:31:15 -0400
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I have a Kevlar Eddyline Wind Dancer which had foam bulkheads.  
The bulkheads have been removed but the sealant is still there.  
The sealant bonds very well to the inside of the kayak.  Any
tips with respect to the process of removing the sealant.  
Would some sort of solvent help break the bond to the inside of
the kayak?  

- --
Jan Mason
td376_at_mail.anonymizer.com


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From: Jan Mason <td376_at_mail.anonymizer.com>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Thu, 08 Aug 2002 21:14:54 -0400
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I guessed that the sealant might be 3M 5200.  I did some searches on the
internet as how to remove the 5200 sealant.  What I found was cut,
scrape, and use thin piano wire as a saw.  I guess guitar strings might
work too.  I have used a chisel and a utility knife so far.  The utility
knife works better than the chisel but leaves a bit to be desired.  Next
step is to get a pack of guitar strings and rig up a little saw out of
it.  When I get most of it out of there, to finish cleaning it up would
a 5" orbital sander do the job?  What grit sand paper should I use?  

Jan Mason wrote:

| I have a Kevlar Eddyline Wind Dancer which had foam bulkheads.  The
| bulkheads have been removed but the sealant is still there.  The
| sealant bonds very well to the inside of the kayak.  Any
| tips with respect to the process of removing the sealant.  Would some
| sort of solvent help break the bond to the inside of
| the kayak?

- ---snip---
- --
Jan Mason
td376_at_mail.anonymizer.com

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From: Dave Gorjup <dgorjup_at_cox.net>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Thu, 08 Aug 2002 21:32:23 -0400
Might want to try a dremel tool with a grinding attachment. Not cheap but 
very effective for that kind of work. Be sure to wear a mask.
The old machinist,
Dave G.

At 21:14 8/8/02, Jan Mason wrote:
>-----BEGIN PGP SIGNED MESSAGE-----
>Hash: SHA1
>I guessed that the sealant might be 3M 5200.  I did some searches on the
>internet as how to remove the 5200 sealant.  What I found was cut,
>scrape, and use thin piano wire as a saw.  I guess guitar strings might
>work too.  I have used a chisel and a utility knife so far.  The utility
>knife works better than the chisel but leaves a bit to be desired.  Next
>step is to get a pack of guitar strings and rig up a little saw out of
>it.  When I get most of it out of there, to finish cleaning it up would
>a 5" orbital sander do the job?  What grit sand paper should I use?


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From: Jan Mason <td376_at_mail.anonymizer.com>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Thu, 08 Aug 2002 22:00:37 -0400
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Thanks Dave.  I already have a dremel tool.  I'll give it a try in the
morning.

Dave Gorjup wrote:

| Might want to try a dremel tool with a grinding attachment. Not cheap
| but very effective for that kind of work. Be sure to wear a mask.
| The old machinist,
| Dave G.

[snip]

- --
Jan Mason
td376_at_mail.anonymizer.com

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From: Erik Sprenne <sprenne_at_netnitco.net>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Thu, 8 Aug 2002 23:32:09 -0500
maybe consider using a putty knife with a flexible blade (that
can be filed to a sharp edge).

or maybe a flush-cut saw
http://doityourself.com/store/6966105.htm
(it has a flexible blade that lays flat on a surface, and the
teeth are not off-set - meaning it won't scratch the surrounding
area as much as a regular saw blade would)

as for 'finish cleaning', much would depend on what the next step
was?    If you use an electric sander, start with a fine grit
paper (150), be careful, and see what that does to the 5200 -
*and to the surrounding fiberglass* - before going to coarser
grits.  You may find that sanding/grinding removes surrounding
fiberglass  faster than it does the 5200.

Erik S



> Might want to try a dremel tool with a grinding attachment. Not
cheap but
> very effective for that kind of work. Be sure to wear a mask.
> The old machinist,
> Dave G.
>
> At 21:14 8/8/02, Jan Mason wrote:
> >-----BEGIN PGP SIGNED MESSAGE-----
> >Hash: SHA1
> >I guessed that the sealant might be 3M 5200.  I did some
searches on the
> >internet as how to remove the 5200 sealant.  What I found was
cut,
> >scrape, and use thin piano wire as a saw.  I guess guitar
strings might
> >work too.  I have used a chisel and a utility knife so far.
The utility
> >knife works better than the chisel but leaves a bit to be
desired.  Next
> >step is to get a pack of guitar strings and rig up a little
saw out of
> >it.  When I get most of it out of there, to finish cleaning it
up would
> >a 5" orbital sander do the job?  What grit sand paper should I
use?


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From: Jan Mason <td376_at_mail.anonymizer.com>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Sat, 10 Aug 2002 19:11:16 -0400
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Thanks Dave.  The dremel tool did the trick.  I ran it at 35,000rpm and
used a #426 dremel reinforced cut-off wheel.  Also used rubber gloves
and a face mask.  The 3M 5200 was heating up and melting on my hands.
Not fun to get off.  The non-reinforced cut-off wheels did not work very
well.  They kept breaking.  I'm 25% done with one bulkhead now and still
on the first reinforced cut-off wheel.  The puddy knife, chisel, and
utility knife are the other implements of destruction that I tried.

Dave Gorjup wrote:
| Might want to try a dremel tool with a grinding attachment. Not cheap
| but very effective for that kind of work. Be sure to wear a mask.
| The old machinist,
| Dave G.
|
| At 21:14 8/8/02, Jan Mason wrote:
|> I guessed that the sealant might be 3M 5200.  I did some searches on the
|> internet as how to remove the 5200 sealant.  What I found was cut,
|> scrape, and use thin piano wire as a saw.  I guess guitar strings might
|> work too.  I have used a chisel and a utility knife so far.  The utility
|> knife works better than the chisel but leaves a bit to be desired.  Next
|> step is to get a pack of guitar strings and rig up a little saw out of
|> it.  When I get most of it out of there, to finish cleaning it up would
|> a 5" orbital sander do the job?  What grit sand paper should I use?
- -snip-

- --
Jan Mason
813-546-0644
td376_at_mail.anonymizer.com

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From: Dave Gorjup <dgorjup_at_cox.net>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Sat, 10 Aug 2002 20:39:49 -0400
Glad it helped Jan. I've found a dremel tool works in a multitude of places 
other tools won't.

One other thing in case you're not aware - when I was an apprentice 
machinist one of the first things we were taught is not only to have the 
right tool for the job but also to know the right speeds to use with 
various tools and materials. If you dont' have one yet, a speed control 
that allows less than full rpm would probably be most helpful in this 
application. It would keep the heat down and just allow the tool to produce 
dust. In this of application with fiberglass and/or hardened resin I would 
most likely use a coarse ball grinding burr and low to moderate speeds.
Hopes this helps. Please ignore if you're familiar with this stuff. 
Whatever works for you is the key. ;-)
Dave G.

At 19:11 8/10/02, Jan Mason wrote:

>Thanks Dave.  The dremel tool did the trick.  I ran it at 35,000rpm and
>used a #426 dremel reinforced cut-off wheel.  Also used rubber gloves
>and a face mask.  The 3M 5200 was heating up and melting on my hands.
>Not fun to get off.  The non-reinforced cut-off wheels did not work very
>well.  They kept breaking.  I'm 25% done with one bulkhead now and still
>on the first reinforced cut-off wheel.  The puddy knife, chisel, and
>utility knife are the other implements of destruction that I tried.


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From: Jan Mason <td376_at_mail.anonymizer.com>
subject: Re: [Paddlewise] Foam bulkhead sealant removal
Date: Sun, 11 Aug 2002 01:31:28 -0400
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My dremel tool is variable speed 5,000 - 35,000rpm.  I'll give the
cut-off wheel a try at slower speeds and also try out a coarse ball
grinding burr.  I am learning as I go.  Once I get the 3M 5200 removed I
get to learn about epoxy and fiberglass.  That will be another first for
me.  I already have the free info packet from West System.  I just don't
let little things like not having done it before stop me.  It just makes
it more fun.  Thanks again.

Dave Gorjup wrote:
| Glad it helped Jan. I've found a dremel tool works in a multitude of
| places other tools won't.
|
| One other thing in case you're not aware - when I was an apprentice
| machinist one of the first things we were taught is not only to have the
| right tool for the job but also to know the right speeds to use with
| various tools and materials. If you dont' have one yet, a speed control
| that allows less than full rpm would probably be most helpful in this
| application. It would keep the heat down and just allow the tool to
| produce dust. In this of application with fiberglass and/or hardened
| resin I would most likely use a coarse ball grinding burr and low to
| moderate speeds.
| Hopes this helps. Please ignore if you're familiar with this stuff.
| Whatever works for you is the key. ;-)
| Dave G.
|
| At 19:11 8/10/02, Jan Mason wrote:
|
|> Thanks Dave.  The dremel tool did the trick.  I ran it at 35,000rpm and
|> used a #426 dremel reinforced cut-off wheel.  Also used rubber gloves
|> and a face mask.  The 3M 5200 was heating up and melting on my hands.
|> Not fun to get off.  The non-reinforced cut-off wheels did not work very
|> well.  They kept breaking.  I'm 25% done with one bulkhead now and still
|> on the first reinforced cut-off wheel.  The puddy knife, chisel, and
|> utility knife are the other implements of destruction that I tried.
- -snip-

- --
Jan Mason
td376_at_mail.anonymizer.com

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