Hello again all,
This is how to build a 15mm or any size grav vehicle.
Draw / sketch the outline until you have a general shape
you like , then finalise.
Trial & error is necessary to get a good shape that forms well when bent into shape.
A 0.7mm ball pen & metal scriber is used to score the card & & 0.3mm is used with stencils for the square shapes in this case.An 8mm stapler & a glue pen are very useful also.
If you are happy with a shape remember to copy it before assembling, otherwise it will be a hassle to remake it
Thanks for your comments.