Hi Raul, 

For injection molding with PA66 GF30, 0.7 mm is indeed a borderline, so whether it can work with such a thickness depends on the final design. As far as I know from my previous projects, a minimum wall thickness of about 1.0mm is generally recommended for Nylon to maintain structural integrity and dimensional stability. Given your specific tolerances and the need for precision, adhering to ISO 20457 seems appropriate to me as it offers guidelines tailored for injection molded plastics, helping to ensure consistency across your components. I would recommend checking with Xometry’s DFM team with your speicific drawings – they helped me optimize my design.