Box Frame
Stack a box-tube superstructure on the drivetrain using a side layout sketch and design intent — zero new dimensions.
01
Why a Superstructure
A box-tube frame mounts on top of the drivetrain to carry the rest of the robot.
- Subsystems bolt onto this upper frame.
- A real example: 973's 2022 robot.
- Goal: build the box on top of your existing drivetrain.
FUSION 360 · SCREENSHOT
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FIG 1
FUSION 360 · SCREENSHOT
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FIG 5
02
SIDE LAYOUT SKETCH
Start with a side layout sketch — the skeleton the frame follows.
- Start by continuing the side profile sketch you created during the sketch basics lesson.
- Attempt to replicate this sketch
FUSION 360 · SCREENSHOT
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FIG 4
Key idea
Design intent: model so the frame updates when the layout changes.
Constraints, not coincidences.
03
Model From the Layout
Sketch on the cross-tube face, not a default plane, and Project the layout lines in.
- Use Project (P) to pull the layout edges into your new sketch.
- Build the box tubes off those projected lines.
- Now editing the layout moves the whole frame.
04
RENAMING FEATURES
Now let's learn to rename features to keep your CAD clean
- Scan for errors and fused bodies.
- Compare against the solution.
- Rename every sketch and feature from here on out.
Recap
BOX SUPERSTRUCTURE
- Side layout sketch drives the frame
- Project layout lines
- Rename every feature
Your Task
Build this
- Model what this lesson covers in Fusion 360.
- Use the AltSkripts tools where they apply.
- Save it with a clear name.
How to submit
- In Fusion: Share → Public Link → Copy.
- Paste the link below.
- A coach reviews it in AltHub.