Print-ready 3D models

Quarter-Sheet Sandpaper Six-Grit File

A bench file box for standard quarter-sheet sandpaper (4.5 x 5.5 in, 114 x 140 mm, cut from a 9 x 11 in sheet). It has six 8 mm grit slots with 146 mm of internal width and a sloped front-to-back stair profile 20–45 mm tall. A deep centre thumb notch through every divider lets you pinch a single sheet out instead of digging through a curled-up pile. Overall size is 151 x 61 x 45 mm.