Guys,
Thanks for your assistance, the bubbles are only really small so I am not
going to worry about it. I was just pissed about the first real flaw in
building the boat.
At least I know now and the area where it happened isn't critical.
I will apply the lessons learned and the advice I have received on the
visible part of the transom in the next few days.
Cheers,
Steve
-----Original Message-----
From: Christian Rasmussen [mailto:Christian@xxxxxxxxxxxxx]
Sent: Wednesday, 27 July 2005 9:40 AM
To: Steve Nichols
Cc: Swiftsolo
Subject: Re: Bubbles in S-Glass layup
You are not alone in this. I went through it and it can be very frustrating
to get some of the tiny
bubbles out of the sglass. In fact I have seen S-glass advetised with a note
warning that it
should not be used for cosmetic areas due to the tight knits. Unless you
have a lot of dime size
bubbles I wouldn't worry about it. If you want to redo, then sand it off
and try again. BTW, you can
also use hybrid on the inside of the transom. Rules do not prohibit this.
Some things that will help.
- Make sure the resin viscosity is high. This means that the room/resin
should be warm
when applying it and while it cures. There is big different between the 65
and 85 degrees. I did
mine in the winter, so it added to my frustrations.
2. A roller can be pretty good, but the small bubbles has to be squeegeed
out. And make sure you stay with it.
the cedar is really bad at outgassing late in the curing stage. To that
effect make sure that you have "coated"
the wood with resin prior to doing the glass. But you dont want to coat it
so much that you add a lot of weight. Greg Ryan has a patent pending
technique he calls "on-off" which I am sure he has described somewhere in
the archives.
Rumors are, he copied it from a scene in the movie "Karate Kid" :)
Christian
- Make sure its warm wher
Steve Nichols wrote:
I made my first major mistake during construction last night. Holy .....
that s-glass is hard to wet out. This was my first go with s-glass on the
inside of the transom and I was maybe a little casual as I had no problems
with the hybrid when doing the bulkheads. I think I applied too much resin
at once as I couldn't get rid of all the bubbles with the squeegee before
the resin had gone off slightly which made it impossible to do.
Do I need to ditch this piece and start again? The bubbles won't be visible
as it is the inside of the transom but have I compromised the strength too
much doing this?
Any tips to prevent a repeat performance?
Cheers
Steve
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