There are parts of this build best done with a sewing machine. I worked with fabric adhesives for too long, then bought and learned to use a sewing machine. I'm now a fan of the Singer 6800C. Key seems to be using a specific needle, foot, thread and stitch. I sewed seat belts, then a harness holding the large O2 bottle, then super thin nylon of the sun screen modified to be an instrument cover. Still ahead is sewing vinyl for side panels. To date, I have consistently used Coats & Clark thread - 100% nylon upholstery CA00011 ART S964 K2 4550. I have used a "locked triple stitch". For the webbing, the stitches are done so as to be stronger than the 3" nylon webbing. The triple locked gives the stitch density that makes this work.