The Turtleback is first built in foam. I haven’t decided how I’m going to end the canopy, with an angled cut per plans or a straight cut? For now I’ve just added some extra length to the foam blocks that make up this rear section. The canopy butts up against the curve and then glass is overlapped to hold it in place.

I’m using pour foam as the ‘glue’. My thinking is that as long as it is stronger than the shear strength of the foam I can use anything here.  Foam is easier to sand than micro. The real strength comes from the glass overlaps.

This is the fun bit. I may have some work to do to get the shape right.

Now for my experiment. I’m going to add more four foam to the underside of the rail lip to take the curve out that you can see above where I have all the duct tape underneath that first layup.

Did I hear you say this is a mess? You try getting liquid foam upside down! As I did forward of the canopy a few logs back, the technique is to let the foam just begin to go off and then get it where you want it. I mix 20-30gram batches. No larger and then I time my run. Too soon and it just drips everywhere. Too late and you have a sticky blob on a stick.

I think I have both sides sufficiently covered. If not I get to add a little more and re-sand. The experiment continues tomorrow morning.