Hello everybody my name is Gary I'm from Auckland New Zealand I hope someone can help I'm desperately looking to start building flight test models but we don't have Dollar tree foam board in New Zealand. We do have fun board but it is 5 mm sick. Could someone please advise if it's ok to use 5mm foam board or if you live in New Zealand what are the options would I have and where would I get it from. Here is a link to the foam board I can get https://www.bunnings.co.nz/jasart-foamboard-white_p00317337