There鈥檚 nothing more fun than bunking out in an igloo, and you can build one with any old carpenter鈥檚 saw. But in our experience, the job鈥檚 easier with a dedicated snow-cutting tool. These saws are made to shape blocks of well 鈥渟intered鈥 snow鈥攖hat鈥檚 powder that has been packed down and settled in windblown polar regions. In such areas, snow naturally settles into a stiff material that鈥檚 a little like foamboard insulation.
Not visiting the Arctic anytime soon? You can make sintered snow in your backyard or at a campsite. Start by shoveling it into a large rectangle in a flat spot. Pack it down with the flat of your shovel, and then wait a day. (The measurements and step-by-step process are outlined in the excellent book, , by Norbert E. Yankielun.)
When it comes to the actual building, it takes a few tries to form a structure that doesn鈥檛 look lopsided and require constant roof repairs. Blocks need to be shaped just right to support the whole, and good tools can make these small adjustments easier. Once you get the hang of it and fill in the dome, the reward is a shelter that鈥檚 a lot of fun to explore, and eerily quiet and peaceful inside.
The following are a few tools that will make the job easier. (And as a last step, don鈥檛 forget to use your saw to cut air holes into the walls.)
Brooks Range Igloo 35 Folding Snow Saw

This ($59)聽features big, aggressive teeth along its 14-inch blade for building igloos or snow pits in a hurry. It folds down from 19 inches to 10, and you can buy a left-handed or right-handed version.
G3 Bonesaw

Genuine Guide Gear鈥檚 ($60)聽has saved lives by cutting out users trapped in an avalanche. The 13.8-inch blade, which comes with sheath and straps, makes a great all-around choice for shelter making, avalanche safety, and even cutting branches for the fire. The design is best for righties.聽
BCA A-2 EXT With Saw

The ($90)聽is a 1.9-pound combination snow saw and shovel from Backcountry Access. The shovel blade is made from strong 6061 aluminum. Assembled, it measures 30.5 inches, but packs down to 17 inches.
It鈥檚 obviously useful to have a shovel on hand if your aim is to build a backcountry snow shelter, but we were a little disappointed in the A-2鈥檚 saw blade length鈥攐nly 11.5 inches. In our experience, that鈥檚 a little short for cutting blocks for an igloo.
Black Diamond FlickLock Snow Saw

The 5.6-ounce ($45)聽is made to attach to Black Diamond鈥檚 11- and 14-millimeter ski poles for extended reach, but it can be used on its own as well. The tooth pattern on the 13.8-inch blade cuts snow as well as wood, and the included durable sheath protects the rest of your gear from the sharp blade during transit.聽
Igloo Tools: Brooks Range Igloo 35 Folding Snow Saw

This features big, aggressive teeth along its 14-inch blade for building igloos or snow pits in a hurry. It folds down from 19 inches to 10, and you can buy a left-handed or right-handed version. ($50)
Igloo Tools: G3 Bonesaw

Genuine Guide Gear鈥檚 has saved lives by cutting out users trapped in an avalanche. The 13.8-inch blade, which comes with sheath and straps, makes a great all-around choice for shelter making, avalanche safety, and even cutting branches for the fire. The design is best for righties. ($60)
Igloo Tools: BCA A-2 EXT With Saw

The is a 1.9-pound combination snow saw and shovel from Backcountry Access. The shovel blade is made from strong 6061 aluminum. Assembled, it measures 30.5 inches, but packs down to 17 inches.
It鈥檚 obviously useful to have a shovel on hand if your aim is to build a backcountry snow shelter, but we were a little disappointed in the A-2鈥檚 saw blade length鈥攐nly 11.5 inches. In our experience, that鈥檚 a little short for cutting blocks for an igloo. ($90)
Igloo Tools: Black Diamond FlickLock Snow Saw

The 5.6-ounce is made to attach to Black Diamond鈥檚 11- and 14-millimeter ski poles for extended reach, but it can be used on its own as well. The tooth pattern on the 13.8-inch blade cuts snow as well as wood, and the included durable sheath protects the rest of your gear from the sharp blade during transit. ($45)