Build a Foil Wind Shield That Actually Fits Your Stove
Wind steals heat fast. A well-shaped foil shield can cut boil times and save fuel, but only if it matches your stove and pot. Enter your measurements and get a printable 1:1 cutting template in seconds.
Updated March 2026 — v1.2
Popular Stove and Pot Combos
Pick a preset to fill the planner instantly. You can tweak the values after.
Your Shield Dimensions
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Cutting Template Preview
This is a scaled preview. Use the Print button for a true 1:1 template.
How to Cut and Fold
- Print the template at 100% scale (no "fit to page").
- Tape the printout to your foil sheet.
- Cut along the outer dashed line.
- Score the fold line gently with a blunt edge. Do not cut through.
- Bend the overlap tab back for a tape or rivet joint.
- Wrap around your stove with the pot in place and check the gap.
Common Mistakes
- Too tight to the flame. Foil that touches the flame will discolor or melt. Keep at least 15 mm of clearance.
- No airflow at the bottom. Leave a 5–10 mm gap under the shield so fresh air can enter. A sealed bottom chokes the burner.
- Shield taller than the pot. A tall shield catches wind like a sail and can tip a light stove. Match it to 70–80% of pot height.
- Thin kitchen foil on rocky ground. It tears fast. Use heavy-duty foil or aluminum flashing for anything beyond a weekend trip.
- Ignoring wind direction. A half-cylinder shield works if wind is predictable. For shifting winds, wrap it fully around the pot with a small top vent.
Canister vs Liquid-Fuel Setups
Canister stoves usually have a compact flame. A close-fitting shield with a 10–15 mm pot gap works well. Liquid-fuel stoves burn hotter and wider. Give them more room (20 mm or more) and consider metal flashing instead of foil.
With remote canister stoves, make sure the fuel line passes through the shield without kinking. Cut a small notch at the bottom edge if needed.
Materials Compared
| Material | Weight | Durability | Best for |
|---|---|---|---|
| Standard kitchen foil | ~5 g | 1–2 uses | Testing fit |
| Heavy-duty foil | ~8 g | 3–5 uses | Weekend trips |
| Aluminum flashing (0.01") | ~15 g | 20+ uses | Regular hikers |
| Titanium sheet | ~25 g | 50+ uses | Ultralight purists |
Quick Tips
- Mark your foil with a permanent marker before cutting. It is hard to see pencil lines on shiny metal.
- Round the corners of your shield. Sharp corners catch on stuff sacks and tear.
- If you camp above treeline, a wind shield can save 30–50% of your fuel on a windy day.
- Store your cut shield folded flat in your cook kit pouch. It weighs almost nothing.
- Test your setup at home with a pot of water before trusting it on a cold morning at 3,000 meters.
Assumptions and Limits
This planner assumes a simple cylindrical shield that wraps around your stove and pot. It does not model bottom air slots, top vents, heat reflectors, or multi-wall designs. For those shapes, use this template as a starting point and trim by hand.
All dimensions are in millimeters. If you measure in inches, multiply by 25.4 before entering them.
Why We Built This
Wind is the silent fuel thief on every exposed ridge and lakeshore. Most backpackers either buy a generic aluminum shield that does not quite fit their pot, or they fold a piece of kitchen foil and hope for the best. Neither option is great.
This planner gives you a precise flat pattern based on your actual gear. Print it, tape it to your foil, cut, and wrap. The result is a shield that blocks wind without starving your burner. It takes about two minutes to set up and the whole thing weighs less than a handful of coins.
If you link to this page from a gear list or trail report, other hikers will thank you.