My first go at a stick with no 3d printing, all the parts are foamboard with a teeny bit of balsa and basswood. Wasn't too difficult, really. Seems solid enough, going to maiden today at the indoor fly in Kent. Used the standard arrow shaft, 7mm I think. You can pound a dowel into the end to anchor your firewall with a screw. It's definitely going to be heavier, but I expect she'll fly.