How to Build a Cardstock Stomp Rocket
Construct an aerodynamic stomp rocket using cardstock, tape, and a PVC shaping tube. Perfect for learning basic rocketry dynamics and safe backyard launching.
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🧰 Required Tools & Equipment
- ✓ Ruler
- ✓ Scissors
- ✓ Pencil
- ✓ 1/2-inch PVC pipe (12-inch guide tube)
📦 Materials & Supplies
- ✓ Letter-sized cardstock paper (2-3 sheets)
- ✓ Clear packing tape or masking tape
- ✓ Modeling clay or dense foam
⚠️ Safety Checkpoints & Warnings
- • Ensure the nose cone is padded with soft clay or foam, never metal or sharp objects.
- • Verify the body tube slides freely off the PVC guide without excessive friction or jamming.
- • Never launch rockets toward people, animals, or overhead power lines.
📋 Step-by-Step Guide (6 Steps)
Roll the Rocket Body Tube
Wrap a full sheet of cardstock tightly around the 1/2-inch PVC guide pipe lengthwise. Keep the paper snug against the pipe so it forms a uniform cylinder, but loose enough to slide easily. Secure the entire exposed seam from top to bottom with a long strip of tape.
- • A smooth cardstock cylinder fully sealed with tape wrapped around the PVC pipe.
- • The tube slides off the pipe when gently pulled without catching.
- • Wrapping the paper too tightly so it binds to the launch pipe.
- • Leaving unsealed gaps along the seam where air can leak.
Seal the Body Tube Airtight
Apply a second layer of tape around the cylinder in overlapping rings or a continuous spiral. Slide the tube partially off the PVC pipe and pinch one end closed, taping it flat and tight. Blow into the open end to test for air leaks; no air should escape through the seam.
- • Glossy tape covering the entire body cylinder.
- • Pinched top end completely wrapped in tape with zero visible light holes.
- • Failing to seal the pinched top end completely.
- • Applying heavy tape unevenly, causing tube warpage.
Cut and Shape the Aerodynamic Fins
Draw three to four identical right triangles on a second sheet of cardstock using a ruler, roughly 2 inches tall by 3 inches long. Cut out each triangle cleanly with scissors. Fold a 1/4-inch mounting tab along the longest straight edge of each fin to create an attachment flange.
- • Three or four identical, flat triangular cardstock fins.
- • Even 1/4-inch folded mounting tabs along the attachment edge of each fin.
- • Cutting unevenly sized fins that will induce uncontrolled aerodynamic spin.
- • Forgetting to score or fold mounting tabs, making gluing or taping difficult.
Attach Fins Equidistantly to Base
Align the fins around the open bottom end of the body tube, spaced evenly at 90-degree (4 fins) or 120-degree (3 fins) intervals. Tape each fin's mounting flange securely to the tube wall, ensuring the fins extend straight outward like spokes on a wheel. Reinforce both sides of each fin with clear tape.
- • Fins firmly anchored within 1/2 inch of the rocket base.
- • Looking down the cylinder, fins radiate outward in straight, symmetrical lines.
- • Attaching fins crookedly or angled relative to the tube centerline.
- • Mounting fins too high up on the body tube instead of near the base.
Form and Mount the Nose Cone
Mold a 1-ounce ball of modeling clay into a smooth, rounded cone and press it securely onto the sealed top of the tube. Cut a small paper circle, snip a slit to the center, roll it into a paper cone, and fit it over the clay. Tape the paper cone firmly to the rocket body to lock the nose weight in place.
- • Symmetrical, rounded cone seated securely on the apex of the rocket body.
- • Tape creates a smooth, continuous transition from the cone base to the body cylinder.
- • Making the nose cone too heavy or completely omitting nose weight.
- • Failing to tape the cone securely, allowing the clay to eject during flight.
Perform Pre-Flight Balance and Clearance Check
Slide the finished rocket onto the PVC launch tube to verify it glides on and off smoothly with gravity alone. Hold the rocket horizontally on one fingertip about one-third down from the nose cone to verify the center of gravity is forward of the fin area. Adjust by adding or removing clay under the nose cone if tail-heavy.
- • Rocket drops cleanly off the vertical PVC tube under its own weight.
- • Rocket balances horizontally on a finger placed in the front half of the body.
- • Ignoring tight spots on the launch tube that will cause the rocket to burst on launch.
- • Leaving the rocket tail-heavy.
Credit: inspired by an original tutorial by Dumb Doggo — watch the original on YouTube.
Don’t have everything?
- No Modeling clay? Play dough, blue sticky tack, or crumpled aluminum foil wrapped in tape
- No 1/2-inch PVC pipe? A wooden dowel, thick marker, or broom handle of similar diameter as a rolling mandrel
- No Cardstock paper? Cereal box cardboard (for fins) and double-layer copy paper (for body)