API Master Test Kit Test Tube Cap Remover

I designed a simple tool that slides under the cap when you need to remove it, directing the force toward the cap instead of the test tube. I often struggled to remove the small lipped cap from the API Master test kit test tubes, sometimes using excessive force to grip them and shattering them in the process. Supports are recommended, but you might get away without them if you slow the print a little, allowing the bridging in the finger rings to extrude cleanly.I have not found one to break yet. Although the layer lines run in line with the applied force, I think the cap gives before the plastic reaches its failure point.