The Metric Magic Wrench

When I give my students metal wrench, I find that they over tighten everything!  We would also need to buy many different and small sized wrenches that would eventually become lost.  This was my solution.  It is a wrench that can handle most small sized metric nuts utilized when working with 3D printers, Arduino/Elegoo microprocessors, and many robotics kits.  This one works with M1.6, M2, M2.5 and M3 on one side and M4, M5, M6 and M8 on the other.  I have printed them in multiple filaments and here is what I have found…

PLA or PLA+ is ridged and offers good strength.  I find that they can break semi easily

PETG is great, a little softer and dents a little but not as easy to break

ABS best of both words but you may want to add a brim

It is set to work well with all of these filaments but if you find your filament doesn't shrink, or you want a really snug fit around the nut, you can scale it a hair smaller.  I was going to offer multiple scales, but it uses so little filament I figure you can print it in what you have an adjust accordingly.  I increase the font on the handle from what you see in the picture, but you can change or remove altogether.  Working on a standard version as well.