Debbi commented that it would be good if I made another postcard and zapped it to see what it would look like, I thought I would try it out, Its not a postcard but a piece of the same base fabric and foiled organza, I did a quick scribble on the machine and then got the heat gun out.
The organza was lighter grey than the first piece, but as it was ready to go I used it.

After the heat gun, the foiled area creates more of a resist to the heat

Close up on narrow grid side

Close up on random circle side
