The leather I tested on was probably ~4oz oil-tanned pullup leather. The second test was 4 layers totaling about 8mm of thickness. The leather is moderately supple. I should have grabbed a few pieces ...
You no longer have to worry about losing your tools and they are easy to carry. LEATHER SEWING KIT: The leather craft tool set contains 18-color wax thread (30m/33yds per roll), awls, hollow ...