This shelf has a multiresolution modifier with mask ready so you can finish it with brushes to your liking without ruining the printability. It prints without supports but there's a steep overhang that can print not-so nicely but isn't visible since it's inside the shelf. I printed these for my kids into our camper, that's why they don't have any sharp edges and are more like pockets so things don't fall out so easily. They have no holes since we fixed them with glue.