Strongbox

I designed this strongbox as a project for the kids to assemble and "work on" with plastic tools. I used 123D Design and Tinkercad to complete the design.

There are two Zip files that contain the appropriate STL files – one for a large strongbox that is 280 mm long and one for a small one that is 160 mm long. The files are also listed individually. The large strongbox size (280 mm) was selected to fit within the limits of an FLSUN i3 (300x300x420) printer. I scaled down the large strongbox using Tinkercad to produce the small (160 mm) strongbox design for printing on smaller build volume printers. I have only printed the large strongbox, but the small one should print just as well.

I included a design for a small wrench to tighten and loosen the bolts. If you use the wrench, make sure you avoid over tightening and twisting off the bolt heads. The bolt heads are roughly 20 mm across the flats - the wrench is about 22 mm to provide a loose fit. The wrench was designed us