Recently I was experimenting with a metal piece, and I came across a challenge.
A small piece of thin copper metal (5cm x 3cm x 0.2 cm) has to be pushed forward and to be rotated. The problem is how to get a force behind the metal piece and have a force to rotate it. The metal piece must go from left side to the right side of the picture2.
The initial idea was to bind the metal piece with a metal bar and to rotate it so that metal will rotate accordingly. However the bar is too thick. I need to use a thin, ideally <5mm, string, metal piece or anything else to control (to move forward and to rotate) the metal piece (see picture below). Using a 0.2 cm copper wire after tying a knot with the metal piece I failed to be able to rotate.
Can you give me some hints what kind of thin string or bar or anything else I may use to accomplish a forward movement through the gap of 0.5 cm between object 1 and 2 (see picture 2) and the rotation of the metal piece afterwards?