In this Instructable you'll learn to make a beautiful geometric form, the small stellated dodecahedron, out of snow. Since we don't have to tell YOU that kanevvluk (Eskimo for "fine snow/rain particles") is the supreme material, grab some mittenfulls of the wet white stuff and let's get crackin.
Well, first we need to make a hollow 5-part mold out of steel, so grab your welding mittens and let's get crackin!
Step 1: Stellated Snowdecahedra - the pieces
Cut yourself a pattern, tessellate them out on a strip of steel, and slice them up with your method of choice. I used the hydraulic shear at my friendly neighborhood makerspace, but jump shear and plasma cutter are fine alternatives.
In total you'll need 50 triangles, but having extra is always nice. For this size mold that comes to about 3 sq ft of steel, and I chose a healthy-looking crop of 16-gauge.
Step 2: Stellated Snowdecahedra - welding the cones
Lather rinse repeat until you've got 5 such cones. Feel free to weld up the seams for strength and total enclosure, MIGging your way to glory.