For some time now I have really been wanting to do solid metal caps for my rollerball necklaces. I have always encapsulated the plastic lids inside with a concern of people wanting to change out their oils and it smells. Plastic absorbs smells, but with my new solid cap necklaces you will be able to rinse them and get most of the smell out, if not all of it.
I first saw solid cap rollerball necklaces from a fellow jeweler I admire. I purchased a cap from her and made a necklace for myself and was hooked on the idea! One day I would love to get my own equipment to cast my own lids but for now I will be purchasing them!