Originally Posted by Vyceroy
Plane Freak you can use Ultracote .. Econocote both work great .. add little weight and provide alot of strength .. here are a few of my planes covered in film .. just keep heat around the halfway point and you will be ok .. plus experimenting helps alot also .. each iron is different ..
I just started fooling around with this Last night. I was covering my new Halk Sky..
Here is what I discovered, and I hope I am right. Please note this is my observations only. Don't yell at me if I turn out to be wrong
covering foam is very similar to covering a balsa fuselage. getting out most if the wrinkles is the biggest issue. Do to the fact that you aren't using stringers of flat sheets of balsa the foamy is curvier. This is a small issue.
I wound up using this method
Cut as large an area of film as you can apply without too many big loose areas. (cause of the shape)
stick to foam sticking the outside edges as much as possible,
Get the iron as hot as you would anytime, and shrink. lows spots first. This pushes the covering to the foam and when it shrinks it doesn't make like a drum head.
I tested this on an old dead delta wing 1st. Note I was using Hanger 9 Parklite.
The shrinking process is easy the difference is this. with a balsa when you get usually pretty uniform curves which are really NOt that dramatic
this is not true on at least the foamie I am covering.
Note I am using a Century 21 Iron which is VERY nice and the Parklite covering is awesome.
I turned the iron up to 350. This is pretty hot for foam and you would think it would melt... which it did slightly but.... When you get the covering this hot it creates a very small depth of melted foam which the covering can slide around on. This very thin layer didn't seem to warp anything and in itself actually seemed to strengthen the foam a little. The foam has great insulating properties, so the heat didn't penetrate very far into the foam at all.
When I got the Parklite this hot It really shrunk, and any little wrinkles which were folded into it seemed to become Very faint.
Please note that different coverings melt at different temps and I have found Parklite to shrink at a low temp but melt at a high one. I love the stuff.
My end result was not too bad and the fuselage is much much more ridged than before.
Hope I don't pay a price for this.