This bag clip is a simple and yet reliable way to seal bags air tight, Being one object with no moving parts its simple to print out. With rounded side edges to make it easier to slide onto a bag. Its easy to install with a few steps. The model is 210x10x6mm with a 2mm gap for a bag.
To install the clip you first want to flatten the top of the bag, and fold the top of the bag down 2-3 times (picture 4). Then you pinch a top corner of the bag and slide on the clip making sure its slid all the way to the back of the clip (picture 5). Last push the clip down the bag while keeping light pressure on the top of the clip while pushing (pictures 6 and 7). Stop pushing once the clip reaches the other end the bag. The check to make sure both corners and middle of the bag is seated all the way in the clip, then you are done with the installation.
Removing the clip is easy, all you have to do is just pull the clip up and off the bag, it should give you no trouble doing so.