Hardwood-handled awl sews a line of lockstitches through heavy fabric sailcloth, canvas, even leather. Kit includes awl, straight needle, curved needle, bobbin of coarse thread, 30yd skein of waxed thread and easy-to-follow instructions.
We refurbished a vintage Airstream RV and purchased period awning While moving after the first month this winter I noticed about 8" of the stitching at the track was frayed. The manufacturer and distributor had no repairs short of returning the awning. My wife used the sewing awl to easily make new tight stitches through very tough fabric and plastic rail.