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

cults3d

I've accumulated a collection of random screws over the years, but I've been too lazy to sort them out because figuring out the size and length was just too tedious and time-consuming. To simplify that process, I designed this tool. In the center of the tool is a V-slot with a metric ruler. Just lay the screw in there, set the screw head flush against it, and use the metric reference on the ruler to get an accurate reading. The markings are 2mm apart, making it easy to measure screws up to 50mm or even longer if you're clever. On the left side of the tool are four heat inserts for checking threads from M2 to M5. I used these specific heat inserts, which you can find on Amazon: https://amzn.to/34yWUIv. The design could be easily modified to use different types of heat inserts if needed. I've included the STEP file for anyone who wants to make modifications. The heat insert depth I used is 6mm; after that, the holes open up to accommodate 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 putting a screw through while the heat insert is still hot allows you to align it properly and push excess plastic out of the way. The uploaded photo shows the tool with a two-color print, which was achieved by modifying an STL file in PrusaSlicer using modifier slabs. In addition to the STL file, I've also uploaded the two-color 3MF project file for anyone who wants to print it in multiple colors. For those using a Prusa MK3S/MMU2S with PLA, I've included GCODE files for printing in both 1 and 2 layers.