20 days ago I was in the field. And there was snow and ice...and I slip down. So, I decided to buy ice cleats/crampons. Well, here was limit on real alps high quality stuffs ... i.e. high prices. So, went to nearby metalworking shop...
Step 1: Start
T profile plate 2 mm thick. with holes for screws. Zinc protected against rust. A 25 mm steel screws, zinc protected, for metal. Self drive in.