Here is some more on this tutorial, sorry it took me longer than I thought - pre holiday hang-ups. Sanding will make short work of this foam. I like to use a sixty grit paper on a block. One quick sanding session and this thing is really starting to look like a helicopter. I will continue placing foam in the voids until everything is filled and shaped. Continue filling with foam and sanding.

At this point, I will start to fiberglass over the foam. I have decided to hold off on forming in the turbine housing and the top of the tail section. My thoughts are that I would like to have something to place clamps on so I can check the alignment of the body halves during this next phase of the plug build.

I begin the fiberglassing process by using a brush (a cheap disposable brush is best) to cover the foam with catalyzed resin. I have decided that initially I will only do the main part of the fuselage and I will do the tail later. Once the foam has been soaked with a coat of resin (see picture below) I can start applying chopped mat over the foam.

I work the mat onto the surface of the fuselage. It must lay as flat as you can get it. I have spent a bit of time forming this fuselage. I don’t want to get sloppy at this point. Laying fiberglass mat over the foam will provide a nice hard surface for the next step of this build which will be the bondo application. Once the fiberglass has been laid, the only thing to do is let it cure. Time to put the chemicals away, clean up and let the resin cure.