I have mentioned riveted aluminum angle construction before and it seems like a particularly attractive technique now that modern CNC machines have become so affordable. I know that it is not the most efficient type of construction theoretically, but I think the simplicity of just riveting through two flat pieces plus a gusset when necessary would be worth a small weight penalty. It has certainly worked just fine on the New Standard D-25 biplanes going strong now for almost 90 years. Does anyone have any actual practical experience with this type of construction to share and/or the technical knowledge to explain the pros and cons of the approach, ideally with tips and tricks to accentuate the pros and mitigate the cons? Cheers, Matthew
