Tri-linder

thingiverse

Colston DiBlasi 10/7/19 George Mason University Math 401 Mathematics Through 3D Printing I designed this shape in Mathematica using a formula for the top half of a circle and the bottom half of a circle. I created my triangle by setting the top as an absolute value function and the bottom as a straight line passing through the origin. Next, I took the top half of the circle equation and subtracted it from the absolute value function to create one equation for the entire shape. I did the same thing with the bottom half of the circle and the flat line. This gave me two equations that I then multiplied together by u to give the shape height so it could stand independently. I successfully printed this on the Makerbot Replicator (5th generation) using red ABS plastic. A 20% fill rate gave a print time of 1 hour and 24 minutes. I used a raft underneath to ensure an even base layer, then waited about 5 minutes for my print to cool down. After removing the print, I gently broke off the raft, leaving me with just the Tri-linder.