Hello Wouter, thank you for considering working with us for this project. I checked both models and the first thing I noticed about the ring were the dimensions of 44 mm, which seem pretty large for a ring. Rings mostly are between 20 and 25 mm. Without being sure of the final dimensions, it’s hard to say something about the text on the ring, who has only a height of 23 mm. You can find out more about text and surface details for silver models on https://i.materialise.com/en/3d-printing-materials/silver/design-guide#anchorEngravedTextandSurfaceDetails10
For the microphone badge, which has indeed very fine lines in the receded parts, steel is most certainly not a good idea. Steel is the cheapest form of metal printing and is polished by tumbling your model with corn polish to smooth the surface. As stated on our website, i.materialise steel is typically used for non-functional parts and is not recommended for parts that require high precision or parts with fine details (recommended wall thickness of steel is 1 mm).
But even in Bronze, this model has to fine details. We need a minimum level of detail of 0.35 x 0.35 mm.
You can also make an analysis by yourself. If you go to your uploaded models in your personal zone at your i.materialise account, you can check at any time what we see when we check your models by using the module “analyze”. You just swipe over the model and then you get the choice between the option “open” or “analyze”. By choosing “analyze” the program will start checking your model and at the end (it may take awhile) you will get the analysis of your model in your in-box. For more information how to do this, please check https://imaterialise.helpjuice.com/using-imaterialise/wall-thickness-analysis?from_search=31336007
Kind regards Lizy