2 Free Issues and 3 Free Gifts!
Full Name:
Address 1:
Address 2:
Zip Code:
Email: (required)
If I like it and decide to continue, I'll pay just $12.00, and receive a full one-year subscription (9 issues in all), a 73% savings off the newsstand price! If for any reason I decide not to continue, I'll write "cancel" on the invoice and owe nothing.
Your subscription includes 3 FREE downloadable booklets.
Or click here to pay now and get 2 extra issues
Offer valid in US only.

Also on

Enter Zip Code

Backpacker Magazine – October 2013

Survival A to Z: Fire

You don't need a magnifying glass to coax a flame from the sun.

by: Casey Lyons

plastic bottle

One man’s trash is another’s lifesaver.

Soda bottles are cheap and plentiful. Use one to create a plano-convex lens and capture high-angle sun between 10 a.m. and 2 p.m. 

Do it Look for a bottle with a convex (curved) top. Clear is best, since it absorbs no light energy, but we’ve teased up flames using green bottles, too. (1) Wipe off the bottle’s exterior. (2) Add enough clear liquid to fill the top convexity (at least ½ cup): Water is best (if turbid, wait for it to settle) or use pee in a pinch (the clearer the better). (3) Cap the bottle or plug it and flip it over. (4) Hold it a few inches from your tinder bundle (use dark-colored tinder like dry leaves, as it absorbs more heat energy) and move the bottle around slowly until the light beam focuses into a tiny point. (5) When you see the tinder start to smoke (5 to 10 minutes), blow gently until a flame appears.


Get lucky in the backcountry.

Need another reason to add a condom to your med kit? With a little water and a lot of sun, you can turn one into a liquid lens. 

Do it You need a regular condom (light colored and non-ribbed; non-lubricated is best because it can double as an emergency canteen). (1) Dump at least a few ounces of clear liquid into the condom. (This technique requires less liquid than the plastic bottle.) (2) Twist the condom until a tight sphere of liquid forms at the bottom—you want a totally smooth surface. (3) Shift the condom-balloon around to find the hottest, most-focused point and aim this beam at your tinder pile. (Tips: Use your fingers to squeeze the sphere to further fine-tune your light beam; make sure it’s angled toward the sun to maximize its strength and heat; and keep your tinder bundle sheltered from wind—it’s all about heat.) 

Subscribe to Backpacker magazine
Sign up for our free weekly e-newsletter
Address 1:
Address 2:
Email (req):
Reader Rating: -


Star Star Star Star Star
Jan 19, 2014

# San Francisco 49ers Jerseys china
49ers 7 kaepernick jersey cheap
Cheap 49ers 53 bowman jerseys
49ers #35 reid nfl jerseys
# 49er jerseys wholesale
# 49er jerseys elite
49ers t shirt cheap
49ers elite nfl jerseys
49ers game nfl jerseys cheap
49ers limited nfl jerseys sale
49ers red limit jerseys elite jersey game jerseys

Star Star Star Star Star
Jan 03, 2014

Gucci Factory Outlet,
Longchamp Bags Sale,
Ralph Lauren Outlet Online,
Hollister UK Shops,
Polo Factory Store,
Polo Ralph Lauren Outlet Online,
Marc Jacobs Sale,
MCM ؔ,
North Clearance Outlet Online,
Michael Kors Outlet Online,
Gucci Outlet Online,
Coach Outlet Online,
Coach Factory Outlet,
Coach Factory,
Coach Purses Outlet,
Canada Goose Christmas,
Michael Kors Outlet,
North Jackets Clearance,
Burberry Clothing Outlet,
Coach Outlet Online,
UGG Classic Boots,
Coach Outlet,
Coach Purses Outlet,
Louis Vuitton Outlet Online,
Michael Kors Outlet
Discount Michael Kors
Michael Kors Outlet
Michael Kors Factory Store
Michael Kors Outlet
Discount micheal kors


Your rating:
Your Name:


My Profile Join Now

Most recent threads

Health and Fitness
2014 fitness updates
Posted On: Aug 22, 2014
Submitted By: RebeccaD
Rocky Mountains
Who Has Plans in the Winds This Year?
Posted On: Aug 22, 2014
Submitted By: OldBill

View all Gear
Find a retailer

Special sections - Expert handbooks for key trails, techniques and gear

Check out Montana in Warren Miller's Ticket to Ride
Warren Miller athletes charge hard and reflect on Big Sky country, their love for this space and the immense energy allotted to the people who reside in Montana.

Boost Your Apps
Add powerful tools and exclusive maps to your BACKPACKER apps through our partnership with Trimble Outdoors.

Carry the Best Maps
With BACKPACKER PRO Maps, get life-list destinations and local trips on adventure-ready waterproof myTopo paper.

FREE Rocky Mountain Trip Planner
Sign up for a free Rocky Mountain National Park trip planning kit from our sister site

Follow BackpackerMag on Twitter Follow Backpacker on Facebook
Get 2 FREE Trial Issues and 3 FREE GIFTS
Survival Skills 101 • Eat Better
The Best Trails in America
YES! Please send me my FREE trial issues of Backpacker
and my 3 FREE downloadable booklets.
Full Name:
Address 1:
Zip Code:
Address 2:
Email (required):
Free trial offer valid for US subscribers only. Canadian subscriptions | International subscriptions