Originally Posted by
Onebyone
Cutters have plastic parts and they do wear out of shape, slip out of place, and get stress cracks. Depending on use some last for a few years others for about a year. That is the life expectancy for a rotary cutter. After seven years plastic starts to deteriorate that's why baby car seats expire.
I have been using the new cutter with ball bearings for about 2 months, so I am disappointed that it appears to be wearing out already by unscrewing with every cut.