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I just saw a Zagi that was covered in Ultracote.
What's the big deal, you say. Well, this was the electric Zagi with white
bead foam as the main part of the wing. I have covered many epp foam
airplanes with Ultracote. But, my previous experience tells me that
styrofoam would melt under the heat required to bond Ultracote.
Yes, I know about low heat coverings but this was regular Ultracote, NOT
low heat film.
The builder said he used his heat gun to create a glazed surface on the
white foam. Then lightly sanded it and applied the Ultracote as
usual. Unfortunately, I was not able to talk to the person that did this
so I could not get the details I was looking for.
When I've tried to apply Ultracote to white foam I ended up with a rather
pock marked finish because the heat from my iron melted the foam
underneath. I have never heard of pretreating the foam and then applying
the film. Yes, I could lower the heat but then I don't think I would get
adequate adhesion nor any level of shrink.
If any of you have performed this job I'd appreciate hearing FIRST HAND how
to go about doing it without melting the white foam underneath.
Thanks in advance,
Ed
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