Seat Belt Slider

thingiverse

I checked Thingiverse for seat belt slides, but couldn't find one that was easy to adjust. So, I decided to design my own. This one has 3 parts to be assembled and uses sponge window foam as a contraction spring. It works perfectly (smooth) and looks great. This design features a press fitting so it can be assembled around the seat belt in the car. I used MD Sponge window seal, which is 3/8" thick and 3/4" wide, costing about $4.00 US for 10 feet (see photo of package). You only need to cut a 50 mm long section for each clip. The foam has adhesive on one side so it can be adhered to the clip before assembly. The last plate has smaller slots and is a simple press fit onto the two leg spacers. Once assembled around the seat belt, you can simply press the last plate onto the two legs. If you need a tighter squeeze on the belt, use a pair of channel lock pliers to press the end of each leg into the final outside piece a bit further. This design uses an 8 mm gap for about 9mm of foam, always providing a small amount of pressure on the belt, so a simple press fit should work fine. UPDATE - I did some research and discovered that most rear car seat belts have two modes. One is for installing a child seat. For a child seat to be held snuggly in place, you pull the seat belt completely to the end and then let it retract in. When it retracts, you'll hear it click. Any slack can be removed by letting the belt retract, but once it retracts in, you cannot pull it back out. This helps retain the child seat snugly in place. But if you accidentally pull your seat belt out all the way to fasten it, you will activate this child seat mode. If so, just let it retract all the way in and pull it out again, but don't pull out too much. Then you won't need this belt retainer. Print Settings Printer Brand: MakerBot Printer: MakerBot Replicator 2X Rafts: Doesn't Matter Resolution: 300 microns (course) Infill: 15% - 50%