Archived from medievalisticals.com, which no longer exists
Roman caligae and calcei have very thick soles with hobnails. Until last month, I had never worked with hobnails. It wasn’t too hard, though. As you can see, the shoes turned out great, and I’m pretty proud of myself.
Both pairs of shoes are made with a double sole. They have two layers of leather over a centimeter thick. The soles are glued, sewn, and nailed together with hobnails
Calcei
Caligae