I have created a new category in the TrainBoard Resources section: 3D Printing Resources. This will be where to share your model designs for others to use (if you so chose). Currently, you cannot directly upload STL files (we are working on that), but you can create a ZIP file and upload. You may also post links in the resource to outside sites such as Thingiverse, if you have an account there. When a resource gets created, it will also automatically create a discussion thread for it in this forum. Please contact me if you need help
may as well get things started .. first thing is a slicer for working with the printer and STL files .. a commonly used one is CURA , link to site : https://ultimaker.com/software/ultimaker-cura