SD Card Box with Hidden Latch

thingiverse

This thing is not just another SD card case. It has a "lever latch" as I call it to keep the lid from popping off while in your pocket or bag. The latch pieces fit flush into to box so the lever won't catch on something and open inadvertently. The picture with the parts in different colors shows the assembled and locked box. STL files are provided for each piece, base (bottom / green), lid (top / blue) and latch lever (red) pieces. Plus there is a file with all three pieces to print everything in on go. The slots in the case are a little thicker than an SD card to accommodate a small piece of an index card to describe the card's contents. The OpenSCAD files are also provided. The main program is in SDCardCaseWithLatch.scad. To change the size of the box to accommodate fewer or more SD cards change the value of ROWS around line 12. The BoxLatch.scad file contains LatchAdds and LatchRemoves modules. The LatchAdds module generates the latch pieces while LatchRemoves carves out material from the case so that the latch pieces fit flush into it. The modules in BoxLatch.scad can potentially be used for any box. In fact my motivation for creating it is for a tool-less extruder swapping feature for my 3D printer. I want to be able to quickly change from the plastic extruder head to a laser burning head, for example. And that idea was inspired by changing the toner cartridge in my laser printer. I didn't need any tools for that task. My plan is to use a 24 pin ATX power supply extension cable for the wiring. I will cut the cable into two pieces and the wires from one connector will go to the extruder and the wires from the other connector will go to the controller board.