Finger Wrench (digit spanner)

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SummaryWhen faced with a tricky situation where attaching a nut to a bolt proves challenging, a finger wrench can be just what's needed. Tight corners, in particular, and areas that require reaching into confined spaces are ideal candidates for this handy tool: it's far too easy to drop a spanner down the back of a radiator, but dropping your finger is not something you want to happen. Recently, I stumbled upon an ingenious little gadget on a DIY blog. Unfortunately, the company that originally manufactured it has stopped production (it's puzzling why they did), and I've been unable to find anywhere to purchase existing stock. I was determined to have one of these gadgets, so I created a 3D model and printed my own version using a 3D printer. It works flawlessly! Using the Finger Wrench is incredibly easy: There's a gap along the backside of the wrench, allowing it to accommodate a wide range of finger sizes. Simply slip a nut or bolt into the wrench as shown in the images provided. The Finger Wrench holds the nut or bolt in place with gentle finger pressure, while the tapered slot inside prevents it from turning. The Finger Wrench is ideal for nuts and bolts measuring 1/2 inch or smaller. For optimal performance, print it using PLA (available at Faberdashery) or ABS at 0.2mm with 100% infill for added strength. UPDATE: 110915 I've refined the design to create a 'Pro' version, featuring a sleeker and more ergonomic finger grip. FingerWrench_Pro.stl is now available for download. A big thank you to MD80, whose inspiration helped shape this improved design. You can find their original creation on Thingiverse: http://www.thingiverse.com/thing:997777 UPDATE: 190116 Thanks to bitschieber's suggestion, I've created a version with enhanced finger tip control for use with smaller fasteners. DISCLAIMER: Please do not use this tool with an impact wrench or any air-powered tools. You may end up damaging the Finger Wrench and more importantly, your finger! Enjoy using your new Finger Wrench!