Spool Holder Cones with dual Bearings

thingiverse

What is this?\nA spool holder cone that's used in pairs to hold a filament spool on a holder with a center rod.\nWhy did I create this?\nOne of my printers came with an acrylic filament holder that uses an 8mm rod to hold the spool. To ensure a smooth unspooling of the filament and a centered mount of the spool itself, I designed these spool holder cones. I tried several variations of spool cones from Thingiverse but none of them fulfilled my expectations. So I made my own.\nFeatures\nUses two 608ZZ bearings per cone, and these bearings are the only part that comes in contact with the threaded rod.\nThe washers clamp only the outer ring of the bearings to the cone, allowing them to spin freely.\nThe small sleeve clamps down on the inner ring of the bearing so a nut on the threaded bolt can hold the cone in place while it still rotates freely.\nHow do I assemble it?\nYou'll need\n4x 608ZZ bearings\n8 3x12mm self-tapping countersunk screws\n2 pieces of each printed part\nA screwdriver for the self-tapping screws\nAssembly\nYou'll need two pieces of each part for a complete spool holder. You'll also need 4 608ZZ bearings.\nInsert the bearings into the recess on both sides of the cone (largest part).\nScrew the corresponding washer to each side of the cone.\nSlide the sleeve onto the threaded rod.\nSlide the cone onto the threaded rod. The side of the sleeve with the smaller diameter must face outside of the cone.\nPut a spool on the threaded rod\nRepeat steps 4 and 3 for the other side.\nTighten down the cones using nuts on the threaded rod.\nHow do I customize them?\nEdit the various variables in the SCAD file to make the cones suit your needs. I didn't test every possible combination of sizes, and there are some basic requirements for the minimum size (e.g. you need enough cone to screw into ;-)).\nI might add a Customizer-enabled version later on.\nThis file was initially published in my 3D-Printing Github repository.\nPrint Settings\nPrinter Brand: \n Prusa\n \n Printer: \n Prusa Mk2\n \n Rafts: \n No\n \n Supports: \n Yes\n \n Resolution: \n 0.2mm\n \n Infill: \n 15% cubic\n \n Notes: \n I recommend enabling build plate supports so that the cutouts for the bearing are supported. I'd also recommend enabling interface layers between support material and object for a smoother surface. I use 2 interface layers in Slic3r. \nThis feature is called Dense Support Layers in Simplify3D. \nIn Cura, you have to check Enable Support Interface and set Support Interface Thickness to 2 layer height, e.g. 0.4mm.