Quickly Measure & Sort M2, M3, M4, & M5 Metric Screws up to 50mm Long

thingiverse

Over the years, I've accumulated a stash of random screws that I was too lazy to organize because determining their size and length was far too tedious and time-consuming. This is why I designed this handy tool to simplify the sorting process. At the heart of the Tool is a V-slot and metric ruler. To measure a screw, simply lay it in place, align the screw head flush with the edge, and use the metric reference on the ruler to determine its length. The markings are spaced 2mm apart. This tool can accurately measure screws up to 50mm or longer if you're skilled enough. On the left side of the Tool are four slots for checking threads M2-M5. I used heat inserts (available at https://amzn.to/34yWUIv) in these slots, but the design could easily be modified to accommodate other types of heat inserts. I've included a STEP file for anyone who needs to modify the holes. The depth of my heat insert is 6mm; after that, the holes open up to make room for any excess melted plastic. It can be tricky to get the heat insert in and keep the excess plastic out of the way of the threads, but I've found that inserting a screw while the heat insert is still hot allows you to align it and push excess plastic out of the way. The photo showing the two-color print was taken using a single STL file modified in PrusaSlicer with modifier slabs. In addition to the STL file, I have also uploaded a two-color 3MF project file for anyone who wants to print their Tool in multiple colors. I've included GCODE files for the Prusa MK3S/MMU2S using PLA at settings 1 and 2.