A small tool for opening atomizers tanks (RTA, RBA) or even drippers (RDA).Print solid (100% infill), with somewhat thick walls. This pocket friendly tool is a wrench for opening stubborn tank atomizers. It is dimensioned for 22 mm tanks, but it works with 23 mm atomizers as well. I suggest that you print two copies, and use them in conjunction. If you want to make a tank tool in a different size, you can adjust the scale of the X and Y axes to the following percentage before you print: 23 mm atomizers = 105%. 18 mm atomizers = 82%. 16 mm atomizers = 73%. 14 mm atomizers = 64%. You can increase the Z axis scale for a more durabIe tool, but keep in mind that overdoing it will make the tool awkwardly rigid.A version with larger handles for better grip can be found here: http://www.thingiverse.com/thing:1293609