Cut Lacing, Cut belt lacing. Round leather belting. Lace leather cutters.
Punch the holes for leather belt lacing as small as possible.
Where metal fasteners or wire belt lacing is used, the particular size recommended by the manufacturer for the diameter pullys and thickness of belt should be used.
No matter what lacing or fastener is used, unless belt and pulley are kept clean and free of oild and water, a loss of efficiency is unavoidable.