Fuel Canister Tray (for cold weather)
by walter, published
Fuel canister tray to keep isobutane blend canisters working in cold weather. Fill the tray with water when in use, this should keep the canister warm enough to vaporize the isobutane as long as the water doesn't freeze.
If you've tried to use gas canisters in the cold, you've probably noticed that they don't work well. This is usually because the fuel is too cold to vaporize. This problem gets worse as the canister is used (the vaporization cools the canister) and as the fuel level gets low (there may be less propane in the mix.
The tray also works well to hold the canister in place when packed inside a pot of similar diameter. The raised feet help with stability on rocky surfaces.
Take a look at http://adventuresinstoving.blogspot.com/2011/11/practical-cold-weather-gas-tips.html and the related articles for more info on using canister stoves in cold weather.
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These trays are sized to fit the common isobutane/propane canister sizes. The 100g (4oz) fuel tray is designed for a 90mm base and the 220g (8oz) fuel tray is designed for a 109mm base.
Print up-side down as shown in the renderings, without support material.
Optional: Use 3mm x 3mm cylindrical magnets in the tray. This will cause the tray to stick to the canister. The holes are sized for my printer, you may need to use glue or drill them out slightly to compensate for differences in tolerances.
Fill the tray with water when using the canister in cold weather.
Take a picture of your tray in use and post it in the "made" section.