St. Patrick's Day Curio

Hi! I'm Catherine and I'm currently a high school student in California. In honor of St. Patrick's day, which is March 17 this year, I created a small trinket with some of the holiday's common motifs all on top of an open book. It's a decorative trinket that I hope brings you some joy!

• Fusion360 (or any AutoCad software)
• A 3D printer
• ABS Plastic of any color

The bottom part of a trinket is a book, and the base is both covers of the book. To create it, click create sketch and choose the XY plane. Then select a rectangle feature. Make sure to make the length longer than the width. Once you're done with the sketch, extrude the rectangle just a little.

The next step is to create the pages of the book. First, click the top of your base. On either side, create a rectangle centered on your chosen side. Make the length and width a little shorter than the cover's, then extrude it upwards. After, create a sketch on the front view of the same rectangle and create an arc starting from the bottom corner to the other side. Then, negatively extrude the portion above the arc to get the curved shape of the pages. Next, select the same sketch face. Draw an arc across the whole sketch face near the outer edge of the object. Additionally, draw a line inside the arc from the latter's middle to the bottom of the sketch face. After that, negatively extrude the excess material to give the pages a more rounded side. To separate the pages, select the front view and draw two symmetrical arches starting from the bottom of the sketch to your desired height. They should have some distance between them which determines how wide that section of pages will be. Repeat the last step as much as you want before mirroring the pages across the y-plane to duplicate it on the other side of the cover.

To start, make an offset plane based on the base and shift it upwards so that just a little portion of it is in contact with the pages. Next, select your new plane as your sketch plane and create a thin rectangle from one side of the book to the other. Make sure that it starts and ends on the parts of the page in direct contact with the construction plane. After that's done, add a line on one side to create a smaller rectangle which will be the width of your rainbow. Again, ensure that your smaller rectangle is on the section where the offset plane and body intersect. Lastly, draw a vertical line along the middle of the rectangle. After you finish this, revolve the smaller rectangle 180 degrees using the line in the middle of the sketch as an axis. Now, create a new sketch using the arch as a sketch plane and draw a couple of arcs from one end to the other. After doing that, positively extrude every-other section about a tenth or two.

First, select a part of the rainbow as a sketch plane. It may also be helpful to make the construction plane you previously created visible to ensure that you completely mount the cloud on the pages. Then, create an ellipse with half of it above the pages. Next, draw an arc from one side of the ellipses to the other along the outline of the pages. To outline the cloud, create a string of connected arcs from one side of the ellipse to the other. Finally, positively extrude your cloud to your desired depth.

Similar to making the cloud, select a part of the rainbow on the opposite side. This time, however, create a circle with about half of it above the pages. Then, draw an arc along the outline of the page from one side of the ellipse to the other. Next, draw a triangle on the circle using the line feature. Once that's done, use the circular pattern feature to create as many triangles along the circle as you want. After, positively extrude the triangles and semi-circle to the desired depth to get your sun!

Select the front view of the base as a sketch plane, and draw a rectangle centered on the y-axis right below it. After, positively extrude it the length of the cover. Then, fillet both sides of the rectangle to give it a smoother look.

First, make a new construction plane, using the cover as a base, a little lower than the first one. I made mine about 0.2 inches lower. Next, select your newest plane as your sketch plane. Create two concentric circles anywhere along the strip where the construction plane and pages intersect. One circle should be a little smaller than the other. The difference will be the width of your hat. After that, positively extrude the space between the two circles to your desired height. Once you've done that, select the top of your "hat" as a sketch plane and create another concentric circle with a larger diameter than the other circles. Lastly, extrude this larger circle just a little, and you have the brim of your hat!

Again, select your latest construction plane as your sketch plane, and on the other side of the book, use the arc feature to create a diamond with a slight indent on each side. Make the two bottom sides a little longer than the top two. Then, draw a couple of lines, one connected to the side of the shape you just drew. Make sure that there is enough space between lines, as this will be the path that they will duplicate along. This was the first time that I used this feature, and it takes a little trial and error to get the spacing right. But overall, it is super helpful for uniquely duplicating features. Once you're finished with that, extrude your sparkle to the desired height. Then, select the pattern on path option. Select the sparkle as the feature and the lines as the path. Create as many as you want, then negatively extrude the new sparkles at different heights, creating a staggered look.

First, create a plane at angle with the bottom edge of the pages as the line. Select an angle where the bottom of the plane comfortably intersects with the bottom of the pages. It was my first time using the feature and it took a little playing around with the find the perfect angle. It was much worth the effort though because it much better fit the shape of the body. Then, select it as a sketch plane. Close to the bottom edge of the pages, create a cloverleaf using four arcs. Once that's done, select the circular pattern feature and set the angular spacing to angle. Then choose the best angle that fits three cloverleaves. After that, create the stem by using the line feature to make an angled rectangle shape. Next, extrude clover leaves along with the stem to the desired depth. Lastly, use the rectangular pattern feature, with the bottom edge of the pages as the direction, to create a couple of clovers along the bottom edge.

Just like you did before, make another plane at angle along the other side. Again, use the bottom edge of the pages as the line. Using this new plane as a sketch plane, create two concentric circles near the bottom edge of the page. One should be slightly smaller than the other. Then, positively extrude the smaller circle and the space between the circles. The latter should be taller than the smaller circle. Once that's done, select the coin as a sketch plane and create two rectangles, one horizontally and vertically, connected by an edge, to make an L-shape. Lastly, positively extrude the "L" to the desired depth and use the rectangular pattern feature to duplicate the coins.

Export the design as an STL file, upload it to the necessary software to 3D print it, and you've got your curio!