I haven't tried it with UNI but the DIY prepreg method where you apply the
resin to the ply between two sheets of plastic and then use the plastic as
a carrier to put the ply on to the surface works very well with BID. I
can't see why it wouldn't work with UNI and I'll certainly try it with my
landing gear ribs when I finish off the work another builder did.
On Tue, Aug 1, 2017 at 2:13 PM, n7188u <chmgarb@gmail.com> wrote:
>
> Thanks for the replies Frank and Keith.
>
> Frank, what you describe is similar to what I am doing now. It's not too
> bad but I am finding it hard to straighten the fibers. It seems that when I
> make one section straight, I mess another. And when I go fix the other, I
> mess the first one :) But at the end it works out OK. One thing I don't
> think helps is that I apply masking tape to the biased cut line. Its nice
> for cutting but I think that when I place that line on the TE, any pull on
> the fibers at that end will distort adjacent fibers since they are joined
> at that edge.
>
> Keith, your proposal is intriguing since I was thinking about something
> similar. I will think about that. Our parts are not that big and a small
> frame would probably work well. I had it with the "roll the fabric in a
> tube" technique which is not working that great for me.
>
> BTW, I asked the Cozy group about it (I was building a Cozy before I got
> the Europa kit). In the cozy, UNI layups tend to be the big stuff (wings)
> so you use the whole width, unroll it over the wind and have two people
> pull at the ends of the whole width of cloth. You lift the whole thing,
> straighten and then bring down. That is hard to do with pieces cut to match
> the shape of the flap with biased cloth. Other suggestions from the Cozy
> group where the 'Spatula" idea (placing the cloth on a big flat piece of
> cardboard and then sliding the cloth in place, the portable roll to move in
> place for unrolling the glass over the part at the right angle, etc. But
> they all involve full width of cloth and dropping it over the part which I
> find a little wasteful for our small parts.
>
> Best Regards,
> Chris Martin
>
>
> Read this topic online here:
>
> http://forums.matronics.com/viewtopic.php?p=471382#471382
>
>
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