Hi Craig,
Thanks for the detailed reply. I built my classic foam filled winged Europa with
Ampreg 20, and I am sure it is a toxic product. I got flu symptoms and often
a headache after using it. The West Systems 105 I too have been using on smaller
jobs, and I find it a far healthier product to use. I have no effects, and
only hope I did myself no harm with the Ampreg 20. It has been that long ago
I used it that I hardly remember, but I do recall wearing my respirator for all
the big layups. I dont mind the West Systems with the exception I believe it
doesnt wet out as well, also I believe it may not be as strong in shear, easier
to pry off a substrate (unzip as I call it). Still, the forces should normally
not be shear forces that "peel" a layup off a substrate, so the effective
strength is surface area based, not point load based with a perpendicular load
pulling th le layup up and away from the job. I just got the wind put up me
when the Long Eze expert said he would not use it as a structural resin. I
interpret
that as a system that entraps "loaded fibes" in a matrix, and as my smaller
layups, like the door reinforcement ones, U believe the West should still
be ok. I am though going to look into Aeropoxy and any other the list
recommends.
Problem is as you know,
In Aussie it is hard to get certain reains systems, and in the old days I would
get Ampreg 20 with half its shelf life remaining, straight from the
manufacturer/agent.
Thanks for the input.
Regards
Tony Renshaw
> On 5 Nov 2014, at 22:08, craig <craigb@onthenet.com.au> wrote:
>
> Tony, I believe most of the other builders switched to west 105 system, we
> have the West systems importer on the goldcoast here and I have spoken to
> them a few times, the spec sheets they gave me for 105 indicated that it had
> a higher rating
> Than the ampreg epoxy system, yes it does have a shorter pot life, but I
> didn't find that a problem. I just mixed smaller batches and was a lot more
> practiced with my glassing work when I ran out of the ampreg, one thing, I
> always had problems with the ampreg causing A LOT of swelling on any skin I
> got it on a few hours after the event, I have never had that happen with the
> west epoxy, mind you I did get virtually all the glass work done with the
> ampreg, I have used the west system for
> "mods" and the filling/sanding stage, west also had some other systems
> equivalent to the araldite 420, but it was VERY thick
> The factory told me, so would not be suitable for a lot of the stuff the 420
> is called for
>
> Regards
> craig
>
> -----Original Message-----
> From: owner-europa-list-server@matronics.com
> [mailto:owner-europa-list-server@matronics.com] On Behalf Of Tony Renshaw
> Sent: Wednesday, November 05, 2014 5:45 AM
> To: europa-list@matronics.com
> Subject: Europa-List: Resin Systems
>
>
> Giddy,
> I have been using West Systems for non structural areas of late, and had the
> opportunity to speak to a Long Eze expert at Chino, LA. He told me that he
> wouldn't use West Systems for structure, and I recall that is reflected in
> the ACS manual. Other than SP Systems which is not available in Australia,
> to,clarify the original,SP20 is superseded and even though it has a picture
> of a Europa on their literature, it isn't approved (go figure), I would like
> a reminder on other approved Epoxies please.,this fellow swore by EZ Epoxy.
> Any advice much appreciated. The West Systems has a greater viscosity, a
> shorter pot life, and doesn't wet out as much.
> Regards
> Tony Renshaw
> Lost Aussie.
>
> Sent from my iPad
>
>
>
>
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
>
|