We needed a way to store 24" rolls of vinyl that did not take up too much room. We have slatwall in our storage area - so I put two glass shelf brackets up high and rest the vinyl on these. I made these to go on the ends and prevent the rolls from, well, rolling off. They need to be glued in place with hotmelt or 2-sided tape. Super glue works as well, just dry fit first! No supports or brim needed. I only printed a brim to finish flushing out some different filament.