This is a remix of 0pamp's Tubular lock tension wrench on thingiverse. https://www.thingiverse.com/thing:3746416 I have a safe with a keypad that bevels out a bit which makes it hard to keep a regular tension wrench seated when applying tension. I extended the reach by a few mm on both sides which will allow the handles to pass over the bevel. I may print again in ABS if I don't get the rigidity that I need out of PETG.

EDIT: As expected PETG didn't make the tool rigid enough. I reprinted using ABS and it feels much better.