Spool hub for 1.5" ID spools

thingiverse

Easy-to-use, quick-printing center for spools with a 1.5" ID. Designed to accommodate up to a 5/16" rod through its central axis. Gently beveled edges ensure effortless rod insertion even when operating under limited alertness. Important note: This center piece is not designed as a friction-fit assembly, but rather meant to be secured in place using a small amount of superglue for stability. For those requiring a friction-fit design, consider scaling up the dimensions by a few percent. Precautions Use at your own risk - liability is strictly assumed and responsibility cannot be claimed. I print my first piece at 0.2mm layer height and 20% infill to verify quality before embarking on more intricate projects. It's typically the initial object I create with every new spool due to its instant usability with that filament and also as a quick test of printing consistency.