ICEBOX® Igloo Tool
The ICEBOX® igloo construction tool is used for igloo building by creating sequential blocks in place. You set the clamps on the form then fill it while packing. After you have filled it you unclamp it and slide it to the next position.
A snow-shelter door that has elastic strap loops used to hang the door with stakes. The door is 26 inches wide and 50 inches tall and will best fit an opening in a snow-shelter that is 23 to 24 inches wide and 45 inches tall.
The snow only needs to hold its form well enough to stay in place until you start the next block. 8 total rows are built including the final cap. Product packing weight for 7, 8, 9, 10, and 11 foot kit is a maximum weight 5lbs 6oz.
Using the ICEBOX® Igloo Tool
The pivot pole length is adjusted as you build each igloo block layer. When adjusting the pole, the tool helps you easily and reliably make a complete and habitable igloo dome. To use the tool, first set the tool in place with the clamps reset on the tool form. Next, fill the tool form with snow which results in the snow forming interlocking ice crystals as it is packed causing the blocks to become stable.
Pack the snow in the form as it is shoveled in. This will mold and attach the new igloo block to the previous layer and adjacent igloo block. Once the form is packed, pull up the clamps to release the form.
Creating the Catenary Structure
Next, move the tool to the next position and repeat the process. After finishing an entire layer, adjust the pole to the numbered hole corresponding to the layer you will be building. The first three blocks are partially filled to create a three block ramp. That ramp exists as each layer comes around and goes up the ramp creating a spiral. Once the top layers are reached, the outside panel is removed and snow is simply placed and packed onto the inside panel of the tool until the igloo is complete.