CuberDude
Regular
I recently just cleaned a cube with vaseline using a paper towel. But then I realized that the pieces were still rather oily, especially the core. So, I put the pieces and the core into soap and water and wash them thoroughly. After that, I rinsed and dried them and reassembled the cube. After a few days, I took apart the cube again and I noticed that there were some brown residue underneath the centre pieces and the core. Is the rivet and the spring rusting or what?