It takes 3-4 hours to stitch an officer visor. and approx 1.5m or 45" of thread. That time does not include cleaning out the stitch holes which has to be done both on the shell and visor. A pin vise is used with a fine drill bit to clean out the old thread. The OR's helmets are easier, because there are not as many stitches to be replaced. In the case of this helmet, the epoxy went over the stitch holes as the shell had split along the stitch line. I had to use my hand drill to reopen the original stitch holes so I could restitch. When I encounter something "different" or what might be called a new problem like this, I have to step back for a few days and just mull it over in my mind and try to come up with a solution. This helmet presented a problem which I had never faced before. Thanks to all for the compliments....this one did turn out well.