The image of the finished mechanism can be seen on the left. The backing (blue) has two tracks in it for the screws to follow when the machine is rotating. The circle was a mistake where I didn’t realize the circle would become unattached when cut, so I glued the cut out circle to the back so that the inner circle would remain anchored for the arm to stay in place. In the next steps for the project I would make a handle that utilizes acrylic instead of having the screw be the handle. In the picture to the right I fashioned a handle which did not end up working. The screws were too long and I would’ve needed many more spacers in order to keep the screws from hitting the backing when rotating the mechanism.

In the same vein as the handle, I have two of the screws turned around so the head of the screw is facing away from the user. This was done so no more cutting needed to take place for the screws to move. The stand is made of two 90 degree triangles of the same size glued to each side of the base. The stand allows the screws that go through the fixed points of the base to extend outward.

The first design that I cut out of the acrylic had two triangles for the stand that were too small to support the size of the base and mechanism. These were super glued to the stand and can be seen in the picture. The one triangle is glued to both the base and the inner circle to support that circle in staying in place.

Once I had completed the stand and remade the longest arm segment (I had to remake because the original was made with the handle) I realized the longest arm was too long, and therefore not staying within the arc track I had cut out. This lead me to recut the arm to be 2cm shorter than before which made it fit perfectly.

The shapes on the right are all the shapes that I did not end up using from my acrylic. Here is a link to my Fusion 360 files: https://drive.google.com/file/d/19w23TsIKUpEljB8g6CHypaVRPLBFyrHT/view?usp=drive_link

These hexagon holes were cut out to be added to the handle, over the hexagon nut holding the screw in place. The measurements seen in the picture are in mm.

The arrows I printed out of pink acrylic to add to the base of the mechanism. This is to show the movement of the arm, and how the direction moving to the right goes slower than when the mechanism moves to the left.

Pieces were cut out using the cut quality setting on the laser cutter on Acryl TroGlass Clear (0.33mm). Before each cut I made sure to check that the machine would not cut on overlapping lines to minimize the risk of fire or unsafe practices from occurring.