Cord Wrap Blueprint Worksheet
Cord Tamer 3D Planner
4th Grade Tinkercad STEM Design Lab
Name:
Date:
Class:
Team:
The Mission: Stop the Tangle Monster!
Maker Goal
Headphone wires love to turn into messy knots inside your backpack! Your job is to design a pocket-sized cord organizer in Tinkercad that winds up your cord and holds both ends securely.
📏
Pocket Size Under 70 mm long
💪
Tough & Strong At least 2 mm thick
🔒
Cord Lock Slots hold wire tight
Step 1: Cord Detective • Measure Your Wire
Use a millimeter (mm) ruler or caliper to check your headphones so your slots will fit just right!
1. Wire Thickness
mm
Hint: Most wires are 2 mm
2. Plug / Jack Width
mm
Measure the plastic plug
3. Notch Target Size
mm
Wire size + 0.5 mm wiggle room
Step 2: Quick Sketches • Try 3 Different Shapes!
Draw where the wire wraps!
Idea 1: Bone / Spool Spool
Where it locks:
Idea 2: Flat Card Flat
Where it locks:
Idea 3: Wild Shape! Creative
Where it locks:
Step 3: Pick Your Winner!
I choose to build: Idea 1 Idea 2 Idea 3
Why is this idea the best one to make in Tinkercad?
Tinkercad 3D Design Lab • Step 1: Ideate & Measure Page 1 of 2
Page 2
My Tinkercad Build Blueprint
Maker Name:
Step 4: My Final Design Blueprint
1 Grid Box = 5 mm
Draw your final design on the grid. Show the top view and where your cord will slide in!
Top View Drawing Grid Count squares to size your object!
Size Tracker (mm)
Length (Side to side):
mm
Width (Front to back):
mm
Height (How tall):
mm
Slot Width (for wire):
mm
Tip: Make height at least 4 mm
Step 5: Tinkercad Shape Recipe
What 3D shapes will you drag out on your blue workplane?
Solid Shapes (The Body)
Examples: Red Box, Cylinder, Roof, Heart
Hole Shapes (The Cut-Outs)
Examples: Box Hole (for wire slot), Cylinder Hole
💡 Super Tinkercad Trick: Select your solid shape + hole shape, then click the GROUP button to cut your slot!
Step 6: Ready-to-Print Super Checklist!
Check every box before printing!
Flat on Bed: Bottom is totally flat on the blue workplane (not floating!). Thick & Sturdy: No paper-thin parts that will snap in your hands. Cord Test: Slots are big enough for your wire to snap in smoothly. All Grouped: Clicked GROUP so all pieces turn into one solid color!
Design Buddy Check Peer Review
Buddy Name:
Did you test if the wire fits their slots? [ ] Yes!
Teacher 3D Print Pass License to Print
Teacher Signature:
Print Time: mins • Filament Color:
Tinkercad 3D Design Lab • Step 2: Build & Print Page 2 of 2
