Ghost Clip

prusaprinters

<p><strong>Summary Section:</strong>&nbsp;</p><p>A partner and I worked together to design a 3D model for a ghost bookmark clip. Based off a doubled-scale diagram of an example bookmark marked up with original dimensions, we created the 2D sketch on the SOLIDWORKS program. We extruded the sketch, and finally made an extruded cut of our initials.&nbsp;</p><p><br>&nbsp;</p><p>&nbsp;</p><p><strong>Lesson Plan and Activity:</strong></p><p>With a partner, recreate a ghost clip identical to the one provided. Both people must have identical files and collaborate each step at a time.&nbsp;</p><p><br><br>&nbsp;</p><p>&nbsp;</p><p><strong>Construction Instructions:</strong></p><ul><li>Use a centre rectangle (construction geometry) with the centre locked to the origin, with horizontal and vertical construction lines. The top will be equal to the bottom, and both sides will be equal. Dimensions are set as per the drawing.</li><li>Draw a line (construction geometry) offset from the top by units as per the drawing.</li><li>Then we mirrored that line about the X-Axis</li><li>At the top of the sketch, we drew a line segment from the intersection of the 2nd horizontal line and the left vertical line to a random point on the top horizontal line. We smart dimensioned it based on the X-Axis with a length as per the drawing and dimensioned</li><li>Make a line segment from the diagonal right endpoint to any point on the second horizontal line. Smart dimension from the point of intersection of the 2nd horizontal line and the left vertical line to the bottom endpoint of the second diagonal. Set the value as per the drawing.</li><li>Then using the pattern tool, we then used the linear pattern tool to create six identical triangles along the top of the sketch</li><li>Make a three-point arc, intersecting the 2nd to last horizontal line twice, and the last line once.</li><li>Smart dimension the diameter as per the drawing.</li><li>Linear Sketch Pattern tool the arc until you have three identical arcs</li><li>Add a coincident relation between the point of intersection of the last two arcs and the 2nd to last horizontal line.</li><li>Make a line from the leftmost endpoint of the triangles to the leftmost endpoint of the arcs.</li><li>Make a line from the rightmost endpoint of the triangles to the rightmost endpoint of the arcs.</li><li>Make a corner rectangle from the top left corner of the figure to a random point inside the figure (construction geometry). Smart Dimension as per drawing.</li><li>Make a circle centred on the bottom right corner of the construction rectangle, and smart dimension the diameter as per the drawing. (This is the eye)</li><li>Mirror the circle about the X-Axis.</li><li>We will then start on the mouth by creating a vertical construction line with dimensions as per the drawing</li><li>We will then mirror the construction of the X-axis to form the other side.</li><li>Create another construction line to connect the ends of the two vertical lines (This will be the bottom of the arc)</li><li>Following this, we will use a 3-point arc by selecting two random points on each vertical line and then the midpoint of the horizontal construction line at the bottom.&nbsp;</li><li>Connecting both endpoints with a horizontal construction line (with horizontal relation) will constrain the arc</li><li>Following this, we will offset the two vertical lines and the arc by dimensions as per the drawing, with cap ends selected.&nbsp;</li><li>All geometry is fully defined following this final step and has all necessary relations</li></ul><p><br>&nbsp;</p><p>&nbsp;</p><p><strong>Design Choices:&nbsp;(This is probably the most important part)</strong></p><ul><li>I started off by tracing the original ghost figure, with the original measurements only, on a piece of paper.</li><li>I created a doubled sized copy of the original tracing, with dimensions as per the ghost clip. I used a ruler and compass for this task.&nbsp;</li><li>I used the Solidworks program to start off with making the main box in the 2D front sketch plane.</li><li>At the top of the box, we created a triangle with the corresponding dimensions, and we used the linear pattern tool to duplicate the triangle into 6, properly matching the diagram.&nbsp;</li><li>We used smart dimensions and relations to constrain the geometry.</li></ul><p>Here is the top of the sketch:</p><p><img src="https://lh3.googleusercontent.com/3oV3cxWLwbrWDiYz1LEkcnHcw3sZUXEJzDkykjf3ogn4uoDh6EHMJpwof3sviYbZ4nsPVd59YbwJ1t4i_qV6PJ0rgBC4g2ke7IoNkvtEwXosTk_n1nolxkpApWdewX3Gic0FrXgSoYYIO5X1Ar2nmxeUOfW0L9D8y8XBz52r6JTf6TSrV-mQg1XNHw"></p><ul><li>At the bottom of the box, we made an arc, and linear patterned it to duplicate it twice.</li><li>We then added the smart dimensions and relations necessary.&nbsp;</li></ul><p>Here is the bottom of the sketch:</p><p><img src="https://lh5.googleusercontent.com/T2nsNj7rxSaLy6nJ_xP2WmednvYR7NeOLnIwP6nBwrBYqnjQ5OmVPKXTKMooUxPP70WoFx28dI7L3YSQSvXbh3jX1uIh0DDyt8oJRkvzLUr_QgBmGWNVw_wdJKdhCdSz0TdX8IBuaQ3bmhsL76T0kHXG49ijIAB9wUjSJ6uWGqejShK-q9iU1GG1ug"></p><ul><li>We were going to do all the drawing on the left two quadrants and mirror it about the y-axis, however we changed plans and would do the eyes, then the mouth.</li><li>We found where the centre of the eye should be, and dimensioned the circle as per the diagram. We then mirrored the eye about the y-axis. We added all constraints necessary.&nbsp;</li></ul><p>Here is the eye we drew:</p><p><img src="https://lh4.googleusercontent.com/K_UfhPY1lRUPIWLrwAOksFDvF-rcCP1ZqmQ2Xz6mSrjxhwtcmfxe9HKHpdJTvGwehjjwiAFD5Z6P5s7gh8sczVhrf9YY-3kZrKt_UaC1wibkrPucB6LV6pudr5yJeJpZmTYLpZOnSwS0Ed1I22yOt5pw2gETTbaZQD9NnVs0OvWXEiOh2FBK_WG8_A"></p><ul><li>Regarding the geometry of the mouth, we had planned to draw everything on the left side of the y-axis, then mirror, but we scrapped that idea since it would be more difficult to make half an arc.</li><li>We created an arc, added 2 vertical line segments, and offset all of them, remembering to cap the ends. We added all smart dimensions and relations necessary.</li></ul><p>Here is the mouth we drew:</p><p><img src="https://lh3.googleusercontent.com/D8KZWs5Pv6woDnCneDqIoKq8g8J_i1kJ4KfMdCML3PQ7PBnNmPtxfDyYoYKGsSbtr1HKhY1Dih3D7ri3DBVGOdjJKqp0sQ261Q93zOIzBMxFErox0yObEJxK6nrGXHE9cGZNS2A5aJ6fpey-eITPmlSMNXYHFhLXwE5uJUw54dFjrcYgGjSC9ysP"></p><ul><li>We finally had the 2D Sketch completed!</li></ul><p>Here is the 2D Sketch:&nbsp;</p><p><img src="https://lh5.googleusercontent.com/_xn1aCAVww4U0wZoY0mBnZgzZOB8RxUtF64WNzQ6aQgPbrtYOc_6_fdPR7zMxiQGUrw4R7CQE_5hqsWM8MrnryxDpPSNb7e9uKZpIcppbRBuA5EMu-JrmkG591mofWlZZjkPW9ZPxD06PP2Vw-bxxcmXpeN4d9rbmX3c4vlnnJoHpZXpk3VrNOaQ"></p><ul><li>We used the extrude boss/base tool to make this 2D sketch a 3D figure.</li><li>At this point, we made one final change, which was an esthetic design choice. We drew our initials on the front of the extrude, and then we made an extruded cut, to finalize our ghost clip figure.</li></ul><p>Final Result:&nbsp;</p><p><img src="https://lh4.googleusercontent.com/eaF5b_ZnF4Ml-ZvOQebs5HJMwjOPyn715b52tMH3E9UUvXAfM9mzkds5vzTnsDKWkLn0iIiU6xLbiyjO5iSqiEU61fACy_OYbBM5CMNZIWCGyz6ll-ksu5cVwRvkReOYoyzoSLpt913g3xVoQJmXtCMjSfN0bDmKNnJFZFt2buB3wwPBfRchgC-G"></p><p><br>&nbsp;</p>