Hi, thank you for considering working with i.materialise for this project.
i.materialise is an online platform and constructed in a way that you can do almost everything by yourself. If it’s your first project with us, I can imagine that somethings might look difficult, but everything is quiet well explained on our website. Here you can find how you can check the wall thickness of your model https://imaterialise.helpjuice.com/using-imaterialise/wall-thickness-analysis?from_search=66054610 and here you can find all the design guide lines for steel https://i.materialise.com/en/3d-printing-materials/steel
The most important thing you have to take in consideration is that a hollow steel part can’t be gold-plated. So, the model must be solid.
If you really don’t succeed in checking the file, you can send a mail to this email contact @ i. materialise. com (without the spaces) with the file in attachment. If it is too large, you can use a third-party service such as WeTransfer to send us your file.
Let us know if you have any further questions, we would be happy to help you. Kind regards Lizy