Shock Division From Star Craft 2

Richard 11th grade, Austin High School

This is a royal guard seige tank from the Star Craft 2 franchise. It is a model that will require several different parts to be made separately. Each will be its own component that will be put together in the final assembly, this one will have 15 pieces to assemble after printing. It can also be scaled down and printed whole to be a tank in the Star Craft Risk board game.

This design uses Fusion 360. Along with this is a 3-D printer is needed to produce the parts. Sandpaper or a grinder can be used to help with fitting parts. Using boiling water was able to help fit tracks without sanding the inside of the chasis during assembly.

Sketch the design out this will involve making half of the basic design- a half trapizoid with rounded ends. Then a recangular pattern is used to create the "treads" of the tank. This will then be mirrored before the more unique patterns will be added on, the dimensions are not really necessary as the design is based on looks and can be scaled as a seperate component. The rounded parts here are made from circles with the inner part removed with the trim tool.

Extrude main body of the sketch opposite of the way that the details are extruded, the details need to be at least .02 inches high than the surgace to show properly when printed.

Round off the top of the tracks as far as possible on the detailed side with the fillet tool. This will give the track a less angular look. Also clean up any sharp edges on the bottom that may have been made by the "treads"

The refrence image also has rectangular stripes indented along the side. Make a initial sketch on the surface and use a rectangular pattern to create 6 even stripes.

The Fusion 360 extrusion tool makes it so that faces are confined by the sketch so there is no need to worry about the excess partsof the rectangles. But if needed, use the trim tool and line tool to make sure that it follows the shape of the track.

Create a sketch using 2 lines on the downward face that is chamfered.

Use the sweep tool and follow the edge lines of the track, remember to chamfer the other side of the sweep. The outside most sweep doesnt go the full length.

Feel free to add any finishing touches and to color, the track is done.

Now we start the tank support. Make half of the general shape and mirror it to the other side with a construction line.

Extrude the sketch out by around half an inch, the scale of the component can always be changed later. Here only half was extruded and it was mirrored later.

Round off the edges as much as possible.

If not already, mirror and add a notch in the middle by creating a sketch in the middle face and extruding out.

Create the first part of the leg and extrude up. Also add 2 rectangular cuts to the "foot"

chamfer and extrude the leg to it angles upwards at an angle

extrude again and cut away any parts that make it not square. Add a center based circle to the middle location of the leg.

extrude out the circle and add a diangonal rectangular slot in the middle. Extrude only the circle, not the rectangle

Create lines that cut inwards using offset lines of the upper faces of the foot. Create and extrude a rectangle with 2 small circles and a smaller inner rectangle on the outwards face of the leg. Color the outer parts of the foot and slotted circle white, everything else will be black.

Sketch out the turret it is a chamfered square with the back area being a upside down trapizoid with the top line rounded off with a 3 point spline. The back "tab" is also chamfered downwards to the maximum amount.

Create a rectangle in the back middle of the main shape and extrude upwards by half the height of the main body

chamfer the side slightly (around .1 inches) and cut away the top part of the extruded rectangle so that it is shaped like a ramp facing towards the back. Using the back face, then crate a rounded top and extruded that along the top of the ramp. FInally use the side faces to create exteches that will cut 90 degree corners into the top, I used 4 here but 3 and 5 can also work.

Cut rectangles into the side. Make sure that the space between each individual rectangle is even by using the rectangular patter tool. Remember to mirror the features to the opposite side by using a midplane.

On one of the chamfered faces create a wing shape as seen and then offset the outside line it inwards to create the line around the outer part, you will need to use the fit point spline tool to make many of the details on the inner part along with the rounded shape of the wing. Keep the sketch on and make two seperate extrusions, first everything on the inside between all the shapes created by the splines then the outside line and all the details slightly higher. Also if you want the wing serperate for printing purposes the wing can be seperated and made in to a component using the splitting tool.

Use a midplane to mirror to the opposite side. This component can then be exported after right clicking it (note that fusion tends to crash when a component with multiple bodies it exported)

Create the emblem on the front of the tank. The "shield" shape in the front is made from fit point splines along witht he simplified wolfs head. 2 duplicate recangles are oon each side angles about 15 degrees upward. The outer shape is 3 lines with the top one being longer. The shape around the rectangles will be about .1 inches higher than the shield itself so the drop is smoothed out with a chamfer.

Add some final details such as a line around the top of the turret made from 2 offsets and a small wave shape on the back tab made from a mirrored split point spline. Color using mainly gold and a dark yellow for the emblem shield.

Use the line tool to make the bottom part of on of the guns for the shock division. One square with a rectangle with a short width then a longer rectangle with very little width. (might need to make the last rectangle a little wider so it doesnt break when printed)

Extrude it up about an inch

Creat a half circle sketch on top that is slightly larger than the short rectangle

Extrude it and fillet down about half on the sides. make a midplane on the outer part and create an offset around the outer part. Extrude the back part with

Extrude the Back part with a taper of 10-20 degrees

Extrude the offset symmetrically and cut shallow rectangles around .1 in deep as shown. Extrude a rectangle inwards from the middle section of the barrel.

Cut 2 grooves on top of each other, one narrow and deep (about 1/3 through) and a second groove that is half the length and half the depth.

After making another half trapezoid shape on the outside, create the following shale on the angled side using lines and fit point splines

Sketch the design shown, it will use mostly fit point splines for the complicated curves. Fillet the sides to a reasonable amount.

Extrude as shown, inside face is extruded inwars while details are outwards.

Create offset sketch on midplane

Extrude a small rectangle on the offset

Mirror the the shape on a plane, the middle part can be reduced to make it more narrow

Chamfer the inner part with the rectangular cut

Chamfer the rest of the edges that are facing up and near the front by a small amount (.2in).

Color with silver, blue, and black as shown.

Incert the barrel component into the design and remove the interference after fitting it onto the turret.

Bring in all the components, 8 tracks, 2 supports, 1 turret, and 1 barrel. Scale to proportion in the original files

Start making the chasis, I started with a large rectangle and a trapizoid

Create the back part. it is a heavily tapered rectangular extrusion from the bottom. All corners are filleted by .03 and the lines are created by mirroring 2 thin rectangular extrusions, chamfering the end, and creating a middle rectangle that is also chamfered. Upper part of the rear is also trimmed.

Creat an outcropping on both sides by reducing the width of the rectangle and then extrucing a section 1 1/2 the width of the support and chamfering the sides. Front can also be reduced in length if it is too long.

Use joints to connect the supports along with the turret-barrel assembly to the chasis

Mirror the rear cover to the front, chamfer the front corners by .5in

Create the front grill. It is a rectangular pattern with 4 replicated rectangles, each are chamfered the maximum amount on bother sides. More of the front is also reduced here on the sides.

Create the "tab" shapes obve the supports by connecting 2 circles and extruding up. Fillet and create a rectangular pattern above with 5 copies and mirror.

Remove visibility of all other components and chamfer the bottom edges inwards, making a bit of a boat shape

Use the peg from the turret component to cut out an interference in the main chasis.

Use a fully assembled track component oriented diagonally to cut out an interference in the chasis. You would want to remove all the details that were left behind to make fitting on the print easier else you will have to sand/grind it later.

Chamfer the top slightly to remove the 90 degree edges except for the outcrops that will attach to the supports

Print out all the seperate components and assemble. I had to heat up the tracks with bioling water in order to make them fit inside the chasis and the peg on the turret had to be sanded down, these could have been avoided by building tolerances into the design. Supports were glued on with superglue

Couple renders made using the Fusion 360 render.