E3D+VET exercise: Fibonacci Spiral

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This is part of the E3D+VET program's 30 exercises developed during the Erasmus+ series. The goal of this program is for VET centers to immerse themselves in 3D printing (visit https://www.e3dplusvet.eu/). The model consists of ten independent pieces. The first two pieces, being the smallest, are a quarter circle with a radius of one centimeter, the third piece shares the same shape but has a radius of two centimeters, the fourth piece measures three centimeters, the fifth piece is five centimeters, and so on, following the Fibonacci sequence (one, one, two, three, five, eight, thirteen, twenty-one) up to the final piece with a size of twenty-one centimeters. The pieces forming the spiral are contained and supported by a rectangular back plate printed in 3D and divided into two halves. This has a recess of seven point five millimeters to facilitate better positioning of each piece.