18mm Wrench

I made this wrench as a school project and I decided to 3d print it. I know it may not be perfectly 18mm but I tried and with the scale of my print bed on the A1 mini I had to downsize it so I did the best I could.Boost MeI am a student who is trying to become better at modeling, however I need a better print to print bigger things, and more accurately. Boosting this model is free and it will help me a lot.