[bolger] Re: Epoxy as Glue
I had concerns about gluing with epoxy as well. Fiberglass coatingings
(fgci.com) sells a pre-thickened 1:1 epoxy adhesive. Mixed by the glop
method (2 glops + 2 glops), which isn't perfectly ratio'ed it cures fine.
And you spend your time mixing in fillers and wearing out your arm. Has a
potlife of 45 min at 77 degrees. Wonderful stuff, and pretty cheap. Make
sure you get the standard hardener for max pot life. I've gotten to where I
like this better than weldwood as I can seems to mix it up faster. Get a
big box of tongue depressors to mix and apply the stuff with. Jamestown
distributors sells 1000 for 7.50.
Amine blush forms after epoxy fully cures. Kind of a slickness to the
surface. Wash the surface with a strong cleanser (i use mr. clean) & water
and a scotch brite or other rough brush. MAS epoxies aren't supposed to
blush, pretty much all others do. not a really big deal. unless its
freezing outside.
For fillets, you'll have to mix in the appropriate material. These, as I
understand it, have to be very thick. Read John Bell's building log on his
sport doryhttp://www.mindspring.com/~jmbell/boatyard.htmfor info on what
you're trying to do with your light dory.
Robert Lundy
(fgci.com) sells a pre-thickened 1:1 epoxy adhesive. Mixed by the glop
method (2 glops + 2 glops), which isn't perfectly ratio'ed it cures fine.
And you spend your time mixing in fillers and wearing out your arm. Has a
potlife of 45 min at 77 degrees. Wonderful stuff, and pretty cheap. Make
sure you get the standard hardener for max pot life. I've gotten to where I
like this better than weldwood as I can seems to mix it up faster. Get a
big box of tongue depressors to mix and apply the stuff with. Jamestown
distributors sells 1000 for 7.50.
Amine blush forms after epoxy fully cures. Kind of a slickness to the
surface. Wash the surface with a strong cleanser (i use mr. clean) & water
and a scotch brite or other rough brush. MAS epoxies aren't supposed to
blush, pretty much all others do. not a really big deal. unless its
freezing outside.
For fillets, you'll have to mix in the appropriate material. These, as I
understand it, have to be very thick. Read John Bell's building log on his
sport doryhttp://www.mindspring.com/~jmbell/boatyard.htmfor info on what
you're trying to do with your light dory.
Robert Lundy
> -----Original Message-----
> From: David [mailto:david@...]
> Sent: 13 December, 1999 5:29 PM
> To:bolger@...
> Subject: [bolger] Epoxy as Glue
>
>
> FBBB --
>
> All these different epoxy products have my head spinning. I'm nearly
> ready to go back to exterior carpenters' glue and polyester!!
>
> If I'm using expoxy as an adhesive, am I better off using it in it's
> "raw" form, or adding a little glass powder to make it goopier?
>
> Also, just what is this "blush" I keep hearing about?
>
> YIBB,
>
> David
>
>
> ------------------------------------------------------------------------
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"david" <davi-@...> wrote:
original article:http://www.egroups.com/group/bolger/?start=1140
When using epoxy as glue, you should add some filler to thicken it, or
else much of it will run out of the joint. Typical thickeners are
cabosil (fumed silica), wood flour, pulverized limestone, and many
others; the same companies that sell epoxy through mail order also
typically sell thickeners. They also should supply you with some
printed info on how to use their products, and this is usually very
worth-while reading. 'Blush' is a amine wax-like substance that forms
during the curing process of typical epoxies that you can see and
feel--and you should clean it off before sanding or re-coating. A rag
wetted with vinegar does a pretty good job of cleaning it up. You can
buy nonblushing harneners that eliminate the clean-up; they are a
little more expensive that the standard hardeners.
Also, the mail order epoxy dealers usually offer good information and
advice over the telephone, too, so when you need an immediate answer,
give them a call.
Greg
original article:http://www.egroups.com/group/bolger/?start=1140
> FBBB --David,
>
> All these different epoxy products have my head spinning. I'm nearly
> ready to go back to exterior carpenters' glue and polyester!!
>
> If I'm using expoxy as an adhesive, am I better off using it in it's
> "raw" form, or adding a little glass powder to make it goopier?
>
> Also, just what is this "blush" I keep hearing about?
>
> YIBB,
>
> David
When using epoxy as glue, you should add some filler to thicken it, or
else much of it will run out of the joint. Typical thickeners are
cabosil (fumed silica), wood flour, pulverized limestone, and many
others; the same companies that sell epoxy through mail order also
typically sell thickeners. They also should supply you with some
printed info on how to use their products, and this is usually very
worth-while reading. 'Blush' is a amine wax-like substance that forms
during the curing process of typical epoxies that you can see and
feel--and you should clean it off before sanding or re-coating. A rag
wetted with vinegar does a pretty good job of cleaning it up. You can
buy nonblushing harneners that eliminate the clean-up; they are a
little more expensive that the standard hardeners.
Also, the mail order epoxy dealers usually offer good information and
advice over the telephone, too, so when you need an immediate answer,
give them a call.
Greg
David,
applications and polyester resin makes a terrible adhesive.
Go to System III's web site, get their address and write them some snail
mail requesting a copy of their "Epoxy Book" and literature package.
They'll send it to you for free and then you'll have learned something about
epoxy and have a basis for further understanding and you won't have to fall
back on questions containing words like "goopier".
of the curing process that forms on the surface of new epoxy work.
Temperature and humidity fluctuations make it assert itself to a greater or
lesser degree. Under ideal working temperatures it doesn't seem to form at
all. Try to sand a "blush" surface and all you get is sandpaper rendered
useless filled with blush. The good news is that it's water soluable and
can be washed off. In any case the blush needs to be removed before making
additional layups or coatings.
System Three Web Site is:http://www.systemthree.com/
Also, stop with this FBBB and YIBB stuff, o.k.?
Chuck
> All these different epoxy products have my head spinning. I'm nearlyIn the first place, carpenters glue doesn't suffice for all (if many)
> ready to go back to exterior carpenters' glue and polyester!!
applications and polyester resin makes a terrible adhesive.
Go to System III's web site, get their address and write them some snail
mail requesting a copy of their "Epoxy Book" and literature package.
They'll send it to you for free and then you'll have learned something about
epoxy and have a basis for further understanding and you won't have to fall
back on questions containing words like "goopier".
> Also, just what is this "blush" I keep hearing about?Blush is known as "amine" blush and and is a sticky, waxy feeling by-product
of the curing process that forms on the surface of new epoxy work.
Temperature and humidity fluctuations make it assert itself to a greater or
lesser degree. Under ideal working temperatures it doesn't seem to form at
all. Try to sand a "blush" surface and all you get is sandpaper rendered
useless filled with blush. The good news is that it's water soluable and
can be washed off. In any case the blush needs to be removed before making
additional layups or coatings.
System Three Web Site is:http://www.systemthree.com/
Also, stop with this FBBB and YIBB stuff, o.k.?
Chuck
David.... the way that I used Epoxy on "Folly" was to coat both
surfaces with unthickened epoxy first ... then thicken it up a little
with some wood flour and glue together..
Chris Flynn "Flynn's Folly"
original article
surfaces with unthickened epoxy first ... then thicken it up a little
with some wood flour and glue together..
Chris Flynn "Flynn's Folly"
original article
> FBBB --
>
> All these different epoxy products have my head spinning. I'm nearly
> ready to go back to exterior carpenters' glue and polyester!!
>
> If I'm using expoxy as an adhesive, am I better off using it in it's
> "raw" form, or adding a little glass powder to make it goopier?
>
> Also, just what is this "blush" I keep hearing about?
>
> YIBB,
>
> David
>
Hi,
Most epoxy companies manufacture fillers to thicken them up. You'll find
with many gluing jobs, the raw stuff is too runny, and just dribbles away.
You're better to mix in filler until it has a creamy consistency, and stays
put. If you want to use it to fillet a joint, then you need to add filler
to get a peanut butter (smooth, not crunchy!) consistency.
Bill
--bill.samson@...
Chebacco News can be viewed on:
http://members.xoom.com/billsamson
-----Original Message-----
From: David <david@...>
To:bolger@...<bolger@...>
Date: 13 December 1999 22:28
Subject: [bolger] Epoxy as Glue
Most epoxy companies manufacture fillers to thicken them up. You'll find
with many gluing jobs, the raw stuff is too runny, and just dribbles away.
You're better to mix in filler until it has a creamy consistency, and stays
put. If you want to use it to fillet a joint, then you need to add filler
to get a peanut butter (smooth, not crunchy!) consistency.
Bill
--bill.samson@...
Chebacco News can be viewed on:
http://members.xoom.com/billsamson
-----Original Message-----
From: David <david@...>
To:bolger@...<bolger@...>
Date: 13 December 1999 22:28
Subject: [bolger] Epoxy as Glue
>FBBB --
>
>All these different epoxy products have my head spinning. I'm nearly
>ready to go back to exterior carpenters' glue and polyester!!
>
>If I'm using expoxy as an adhesive, am I better off using it in it's
>"raw" form, or adding a little glass powder to make it goopier?
>
>Also, just what is this "blush" I keep hearing about?
>
>YIBB,
>
>David
>
>
>------------------------------------------------------------------------
>GRAB THE GATOR! FREE SOFTWARE DOES ALL THE TYPING FOR YOU!
>Gator fills in forms and remembers passwords with NO TYPING at over
>100,000 web sites! Get $100 in coupons for trying Gator!
>http://clickhere.egroups.com/click/2092
>
>eGroups.com Home:http://www.egroups.com/group/bolger/
>http://www.egroups.com- Simplifying group communications
>
>
>
FBBB --
All these different epoxy products have my head spinning. I'm nearly
ready to go back to exterior carpenters' glue and polyester!!
If I'm using expoxy as an adhesive, am I better off using it in it's
"raw" form, or adding a little glass powder to make it goopier?
Also, just what is this "blush" I keep hearing about?
YIBB,
David
All these different epoxy products have my head spinning. I'm nearly
ready to go back to exterior carpenters' glue and polyester!!
If I'm using expoxy as an adhesive, am I better off using it in it's
"raw" form, or adding a little glass powder to make it goopier?
Also, just what is this "blush" I keep hearing about?
YIBB,
David