Ok here is a lattice fold card . It requires a little piece of gluing as some cuts were unavoidable. File can be downloaded both for cut and gypsy. I have used george as my gypsy wanderings is distorted but you can easily recreate in gypsy wanderings

Page 1 is the  base for welding and need not be cut. You can resize and use it for your own design
After cutting page 2. Keep all pieces intact while removing - the triangular pieces and the card as if it were a single card piece of size 8.5 by 5.5.
Then score carefully on front and back like the picture below

Carefully fold the triangle pieces and glue just the 2 edges shown with preferebly glue dot  by flipping it down.
Not the top of the triangle but just the base - on the 2 sides. I am gluing one in the picture also glue the other side. You can start from bottom leaving out just the last piece as you will see later.

This is how it looks when folded
Now remove only the bottom piece if you want and attach it at the top like I have done below