> 7.4 to 50.7 grams per year. That figure seems too high. One could find the upper bound by measuring how much weight of chopping board decreases over a year?

> 7.4 to 50.7 grams per year. That figure seems too high. One could find the upper bound by measuring how much weight of chopping board decreases over a year? Slice an old chopping board with a deep depression from cuts and compare weight of center strip against unused edge?