THESE FILES ARE DIMENSIONED IN INCHES, NOT MILLIMETERS SET REPETIER OR YOUR CONTROLLING PROGRAM TO IMPORT OR RECOGNIZE FILES IN INCHES This is a simple screw-mountable snap-in holder for any 18mm diameter rechargeable batteries, most commonly seen in 18650, 18500, 18490 and 18350 sizes. The screw hole is made for pan head #8 wood screws or #6 machine screws. My printing parameters: ABS .35mm nozzle 1/128" (.2mm) layer height 40% infill 2 vertical shells