Adding buttons to Lederhosen

[Klara]

Is it a treadle sewing machine? Great find, but I would definitely NOT use it for this job. As @fredk has said, this would be more difficult with a sewing machine then by hand.

[fredk]

Use a round point awl, aka a 'scratch awl' to poke round holes through the leather first then use a # 001 (JJ Needles) or a 00 or 000 (Osborne) Glovers Needle with 0.6 to 0.8mm waxed thread to sew up