About this 3D model

Thing #4113 is still fiddly to undo, so I decided to make it easier to use. This thing is larger and has improved geometry to grip on with the fingers. This version takes same screws as per thing #4133. Assembly with the screw is the same as per original: epoxy + vice. If you want more bullet proof version have a look at thing #124869. Hope I just made world a little bit better :-)