Anyone know of a method to use a chopper gun and epoxy. Is a copper
gun made that works for epoxy?
I thought it might be a good way to apply a barrier layer to a FRP
hull.
Don't know if it even exists.
Tks
Bob

There are chopper guns that mix the resin / catalyst and chop strands of
glass (hense the name Chopper Gun) in very cheap boats but are used
primarily in other industrial layups, like shower stalls, etc.

Then there are guns that mix just the risin and catalyst at the nozzle..
These are used in some boat production to apply the resin/cat. mix to the
mat and roving before and during layup (or wetting out process).

If your considering use for a barrier coat on a single hull you would be
better off using a premix in a paint gun with special nozzle. If it were for
a boat yard, the nozzle mix type gun could be used but would have to be
calibrated to the epoxy mix..

BTW. I don't know of any barrier coat that would require a chopped strand
application, so Chopper Gun would not be appropriate.

But then, What do I know..

Steve
s/v Good Intentions

Bob wrote:

Anyone know of a method to use a chopper gun and epoxy. Is a copper
gun made that works for epoxy?
I thought it might be a good way to apply a barrier layer to a FRP
hull.
Don't know if it even exists.
Tks
Bob

Is it just me or does using epoxy with a chopper gun sound like "trying
to make a silk purse from a sow's ear? Why would you want to combine the
best adhesive with the cheapest, crappiest glass technology? If you
going to spring for epoxy, why not spring for glass cloth, too?


--
Regards

Brian

Brian,

The polyester guys do this. They save so much money on glass cloth that
they can finally afford epoxy.

Regards, Ron

I don't recieve e-mail at this address because of spam. E-mail me
at crtsrATmsnDOTcom.

On 19 Jan 2004 09:12:12 -0800, (Bob) vaguely
proposed a theory
.......and in reply I say!:

Chopper guns are used to lay up huge layers as quickly as possible,
not to apply barrier layers. CSM in a gun produces quite a ragged
finish, unless vacuum bagged afterward. CSM is for bulk, not finish or
strength, and probably not for waterproofing either, as strands are
likely to stick up out of the layup, again unless VB'd.

Anyone know of a method to use a chopper gun and epoxy. Is a copper
gun made that works for epoxy?
I thought it might be a good way to apply a barrier layer to a FRP
hull.
Don't know if it even exists.
Tks
Bob

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I was frightened by the idea of a conspiracy that was
causing it all.
But then I was terrified that maybe there was no plan,
really. Is this unpleasant mess all a mistake?