Simple 1-8mm hole test

I created a set of 3D-printable models featuring holes with diameters ranging from 1mm to 8mm. Each model includes five holes with incremental enlargements of +0.20mm. For example, in the 3mm model, the hole sizes are 3.0mm, 3.2mm, 3.4mm, 3.6mm, and 3.8mm. There are eight models in total, each designed to demonstrate the impact of slight increases in hole size on fit and tolerance.