Mechanical Unit Circle and Trigonometric Functions

prusaprinters

<p>I adjusted some parts to have tighter tolerance, and these adjustment take out backlash pretty much completely.<br/> I enlarged the big gear by 0.3mm and modified the inner hole for a tighter fit. Also increased the size of the arrow piece for tighter fit.</p> <p>Furthermore, the pins are increased diameter to make them snug fit with the rings, and the connectors on the feet are thickened for snap fit to the lower housing.</p> <p>The degrees plate had lots of loose parts (the inner form of degree signs, zeros and four) so I fixed that as well.<br/> The last part I adjusted is the tan slider, as I noticed it got stuck at the middle and right pin. I made the upper and lower radius a bit bigger and added two guided bulbs at the top slider and made the connection to the cos/sin slider a tigher fit. I could also have done this with the tooth rack, but it seems not necessary.</p>