HATY the support fox demo

prusaprinters

<p>For all 3D printing supports are needed for various overhangs, bridges and arches. As your students start designing their first 3D prints, you will want to point out that supports may be needed for angles over 45 degrees (Y), bridges (H) or arches or exposed overhangs (A).</p> <p>You can also change the orientation of the print to show them how to eliminate supports entirely. By laying HATY flat onto the build plate, you can print this without supports.</p> <p>To add visual pop to this, use white or semi-translucent filament, and use dry-erase or permanent markers to mark the filament before it goes into the hot end. The colors will be pastel shaded, but will give you and your students a clear view of the layers and orientation of the print.</p> <p>You can leave the supports and brims on the print to show the raw and processed prints, as well as clean it up.</p> <p>HATY stands for H, Arches, T, Y.</p> <p>A handout can be purchased through <a href="https://www.teacherspayteachers.com/Product/HATY-the-3D-printing-support-fox-demo-3810986">https://www.teacherspayteachers.com/Product/HATY-the-3D-printing-support-fox-demo-3810986</a></p> <h3>Print instructions</h3><p>Unassociated tags: 3D printing, 3d printing handbook, arch support, fff printing, steam project, Support demo</p> <h3>Category: 3D Printing Tests Standards</h3> <h3> <a href="/search?sort=popular&amp;type=things&amp;is_edu_approved=1&amp;standards=3"> NGSS </a> Overview and Background</h3> <p><strong>background</strong></p> <p>With FDM printing, anything that hangs over empty space will need support. This support takes more filament and time to print. After printing you will also have to remove the support, followed by sanding or trimming, which can add more time and expense.</p> <p>One way to eliminate supports is the change the orientation of the print so there are no exposed overhangs.</p> <p>You will need to use supports if there is a bridge (the space under the H), an arch (the tail), an exposed overhang (the tip of the tale) or flat overhang (T).<br/> If the overhang angle is less than 45 degrees (Y) you can generally print without support.</p> <p>This matches the YHT section of the 3D Printing Handbook by 3DHubs.</p> <h3> Lesson Plan and Activity</h3> <p><strong>Print &amp; Demo</strong></p> <p>Print 2-3 HATY's.<br/> Print the first one flat on its side.</p> <p>Print a second vertically with 20-30% support, with support from the build plate only.Leave the supports on.</p> <p>Print a third vertically with supports everywhere.<br/> You can process the print by removing the supports and cleaning up the print with a hobby knife, flush cutters, or sandpaper / emery board.</p> <p>Explain to the students and use as a teaching model to show students how to design items for 3D printing that will take minimal supports, and have the best orientation for printing.</p> <p>For further experimentation, the students can explore the slicer setting by changing the orientation, layer height (resolution), scale and support percentage of the print.</p> <h3> Materials Needed</h3> <p><strong>materials &amp; coloring</strong></p> <p>To get a striped effect in the print, use dry-erase or permanent markers to color the filament before it goes into the hot end.</p> <p>For filament use white, natural or light colored PLA or ABS. Dry-erase markers work well with PLA, but tend to have a pastel shade.</p> <h3> Skills Learned</h3> <ul> <li>orientation</li> <li>supports</li> <li>coloring</li> <li>support precentage</li> <li>planning</li> <li>designing</li> <li>engineering</li> <li>printing skills</li> <li><p>fdm printing skills</p> <h3>Duration of Lesson</h3> <p>1-2 classes</p> <h3>Preparation</h3> <p>Print 3 versions. Include tool safety and eye protection for removing support material.</p> <h3>Rubric and Assessment</h3> <p>Evaluate by having students print their own, or model best practice in their designs.</p> <h3>References</h3> <p>This is based on the YHT models in the 3D printing handbook, by 3DHubs</p> </li> </ul>