They are just "eyeballed" roughly about an inch apart. You really don't have to be that specific with them. The heat of the blade kind of "melts" out a much wider trough than the blade width. The idea is to just get the foam to flex. They about 3/4 s the depth of the foam. You don't want any deeper than that..... This week I'll get into "locking" the shape to prepare for the fabric work...

Sorry for all the questions but wouldn't superglue or something like that be better than filler to hold the shape?

Yes, you can use super glue, but you would be using a lot to really get it to "lock." I also like to do this initial lock while it is in place like this. Bondo type filler is just cheap and fast and also clings quite nicely. I'd be filling out the end of those kerfs anyway.

So, wing, part 2. I got my shape pretty much where I wanted it and finished getting the shape stiff enough to work with. The pictures tell it all here. Progress has been good and I am learning how this works. For those of you that have worked with fiberglass products this is a completely new learning curve. You have to be constantly aware of the "weave" pattern which can easily move/shift. I came up with a couple of things that helps with that....

Ha, ha, and we thank you for your support...... as we learn and possibly screw up new things....

Hey, at least your letting others like me learn with you!

So we are supposed to get somewhat of a snow storm tonight. Wife agreed to help me align the top piece tomorrow.....fingers crossed on getting the weave down straight. The spray contact glue helps a lot with that....

So we got about 5 inches of snow, plowed all the drives out here, cup of coffee, minor nap....back to the wing. So did you ever think that you made so many mistakes you could just write a book on How Not To Do This! Well, that was me, fortunately I had thought far enough ahead to allow for problems. So, I blacked out the top side, did some light sanding underneath, sprayed a layer of sticky glue and started shaping the fabric to the top surface while pulling it and wrapping it around the edges. Take a look at the pics. and I'll explain along with minor insertions of stupidity now and then...

And now I know why guys do vacuum bagging on parts like this. Don't get me wrong you can do some pretty serious lay up this way.... however when you start getting multiple curves/shapes you are going to have trouble securing things in place while your epoxy kicks. I had brains enough to plan ahead in trouble spots so it didn't bite me in the butt too much but bagging would have been a no brainer. And the fun continues......

Looking good so far!