I bought some boxes "Samla" from IKEA (45 l). There was a lid for this box available but it was very loose. So I designed a latch to hold it with Autodesk Design 123. I switched to Shapedo for all new things - because I dont agree with MakerBots policy on patenting community driven innovations. You can find this item at http://shapedo.com/lab/latch_for_ikea_box_samla and there also the construction source file. This entry is for reference only.