I’ve been babysitting the printer 12 hours a day for weeks to get a work problem done, so I haven’t had much time to design and build anything fun. However, I finally got a few hours free to print my own stuff and decided to take a shot at yet another set of latches. The result is a single printable part that can be used for the electronics cover and for the four side panels. No tools are needed to pop the hatches. They snap in and snap out. Here’s what they look like installed in the electronics cover. They’re anti-snag, low profile, only 4 mm high.The wide end has a rolled edge to give your fingers just enough purchase to lift the hatch. The latch has a recess on the top surface for a 15 mm diameter x 1 mm thick magnet. A little glue in the recess will hold them in place permanently. Here's a typical magnet for this. http://www.dx.com/p/fandyfire-15mm-x-1mm-nickel-plated-ndfeb-magnet-100pcs-417837 You attach the latches to the hatches (that rhymes!) with an M3x12 flathead screw. Each latch needs a corresponding magnet mounted to the frame. I found these 12 mm diameter x 3 mm magnets with countersunk holes in the middle that are perfect for an M3x12 flathead screw. http://www.dx.com/p/12-x-3-4mm-ndfeb-neodymium-magnet-circular-cylinder-diy-puzzle-set-10-pcs-419002 As I said these will also work for the four doors on sides of the BigBox. The only difference is, because the side panels lack the threaded brass inserts that hold the electronics cover down, you will also need two M3 nylock (nylon insert) nuts and two M3 washers for each latch. So, if you like magnets, and enjoy printing lots of copies of the same thing, this may be the mod for you. Enjoy!