Making a Solar Dry Box
Gather your materials, using metal angle brackets and swallowtail fabricate the parts, One slanted 550mm batten and one with swallowtail grooves (Querlatten) are fitted into the cut-outs in the shorter legs (Beine) and glued,  fix the front plywood (188mm) with nails, Take one slanted, two normal and two battens with swallwtail grooves (550mm) and glue them into the cut-outs in the longer legs (Beine) for the back, Glue the shorter batten (490mm) inbetween the two longitudinal battens (Längslatten, 570mm) and then fit the whole thing inbetween the front and back subassemblies for the floor, assembly all the sub assemblies.