Greek sandals-soles

[Martin Moser]

I don't want to use that "bulky" reenforcement stipe,since it doesn't seem to have appeared in the greek sandals. I just don't know if they would last without it.

The narrower ones of those are hardly more than 1 cm, but even without they should last if you sew them with a double seam, flesh/edge and grain/edge. Caligae used quite heavy leather, so if you choose your leather with a minimum of 3mm thickness, you can use quite a thick thread.