Basic Fidget Slider

Simple fidget slider. Holds four 7x2mm magnets. I used a textured surface for the tops and bottoms. Magnets can be tricky to stay in place while getting the top on but I used a stack of magnets behind each one to hold them in place (see pic). The tops do fit snug but probably wouldn't hurt to put some superglue to hold it down better. I didn't have any luck with glueing the magnets in so just glued the top in place. May need to add more bottom layers if magnets show through too much on the bottom. I stayed with he default value but I found some different filament brands were more translucent than others.  

Install magnets with matching polarity in both sliders so their bottom sides attract. I use a sharpie sometimes to mark them.