tank

thingiverse

Toy Tank rotating treads treads require no assembly! Print Settings Resolution: 0.2 - 0.1 Infill: 10%-20% Notes: NOTE: If you do not print the model with supports it will not work! Do not print it very much smaller or it will also not work Post-Printing Assembly You will need to remove a lot of supports and wiggle the treads a lot before they will move correctly. Remove all supports before assembling. Once you have removed ALL of the supports, you can put it together! Take the pieces called tanktop.stl and tankgun.stl. Put tanktop.stl through tankgun.stl's hole so that the dome is on the top side of the turret and the cylinder part is inside the hole. Take the piece Tankbody.stl and put the tanktop.stl and tankgun.stl peices on to top so that the end of tanktop.stl is over the hole in the tankbody. Now push the dome down, you may need to push it lightly against the table or use a hammer to lightly tap it into place. Be careful not to break off the gun - it is quite easy to do this! The turret should now be secured in place but be able to turn. Take one of the tank treads (it should move easily now) and place two of the wheels inside the tread on either ends so that the tread is taught between them. Now slide the wheels onto the axles on the body, put a third wheel on the middle axle. Take three of the pieces called wheelcap.stl and push them onto the ends of the axle to secure the wheels. (It's okay if it is a little hard to get them on - but if they do not fit, do not force them too hard, try sanding the axles a little.) Repeat steps 3 and 4 for the other side now. YAY you now have a 3D printed toy tank! Have fun! How I Designed This I used SketchUp. The main challenge was the treads - they were tough to create. I created an interlocking system where everything was about 0.34 mm apart, allowing for motion. The rest was easy. Project: 3D printing Moving parts lesson Project Name: Moving parts tank project. Overview & Background: Often when 3D printing you want your model to have moving parts. There are two ways of doing this - one by making separate parts and assembling it after, or two by making spaces in the model and printing it with supports. This toy incorporates both of these methods. The treads require no assembly but removing supports while the wheels and gun are put together by hand. Objectives: The objective is to teach students how to make moving parts through making a fun and appealing toy. Audiences: The model can really be used by all audiences - whether as a toy for kids or a project for adults. They will need to have some experience with a basic 3d design software like SketchUp. Duration: On a MakerBot Replicator 5 this print takes about 15 hours. It will probably take your students awhile before they come up with something good - so maybe 4-8 hours. Preparation: You will need: a printer with at least 0.2mm resolution some filament of course they will need to have some experience with a basic 3d design software like SketchUp References: http://www.sketchup.com/products/sketchup-make Rubric & Assessment: They should have somehow incorporated moving parts into their projects.