Ahmet - I think I get what you are trying to do. A pre laminated and fitted
angle would work. Make a form, wider than you need and build up layers. Make
it way to big, then Trim and bevel to fit. (Angle grinder). Epoxy in place,
fill the void(pre drill) then laminate in place.
Btw, mat is NOT structural. it fills the spaces between the warp and weft of
cloth or roving, making a denser laminate.
Others may disagree - would be interested in alternative approaches.
Dave
Ahmet - my approach to making flat pieces is to first laminate on a sheet of
glass. With polyester, I build-up glass/mat alternating and laminated to a high
glass content with a consolidator. (A kind of roller)
With epoxy you can use biaxial stitch-mat with fine cloth or peel ply on top,
then squeegee out resin. Use a layer of waxed paper between the glass (or
Mdf) as a release layer.
If cured on the glass you can make amazing sheet parts, and assemble them with
with fillets of epoxy.
You can also do the work above on a sheet of waxed paper and apply the
resulting laminate before it kicks. You basically make a band-aid and plop it
in place. (Essentially)Much easier and better than laminating in situ. You
can take these laminates and lay on a form, pre cure.
By progressively sizing the pieces, you can make band aids thicker in the
middle, often useful.
In your case, if I understand correctly, I would combine both pre made pieces
and pre laminated 'band aids).
I would fill the void with glass-rich epoxy. If you need it to flow and level,
use only a little cabosil.
You can get a veterinary syringe or make a piping bag out of a ziplock if you
need to inject into a space.
Consider laying cloth on its bias for corners bridging seams. Remember to
feather edges to maximize gluing.
Dave.
Date: Tue, 24 Nov 2015 23:50:57 -0500
From: Ahmet <ah...@sailnomad.com>
To: cnc-list@cnc-list.com
Subject: Re: Stus-List Epoxy fillers and other stuff...
Message-ID:
<CANjm-aqqTMNqDjMPt=NL1d8dk=XqvuCVAvaOqSnqZn=8aqm...@mail.gmail.com>
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Thank You, that is a lot of information condensed.
I have a challenge. Whoever built my hull # 5, missed the sump location by
an inch. So I need to extend the sump wall horizontally.
I would thing that I would start wetting structural mat and go horizontally
out from where the exposed nut is. It is basically a 4 inch vertical wall
than needs to be filled in.
The situation is in PIC 3 <http://www.boatjuggler.com/images/pic3.jpg>
Here is sort of a drawing <http://www.boatjuggler.com/images/Drawing.jpg>I
have.
What might be the best way to build up the vertical wall that will
eventually withstand the pressure of the nut besides just keep on adding
cloth until I have the desired width ?
Ahmet
Sent from my iPhone
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