If you are just hand cranking you probably will not notice a difference in the smaller shred. Add a motor and yes, it'll probably have a tendency to clog. I have a 1.6mm that shreds flawlessly when motor driven. I also have a .8mm that jams quite often when driven by a motor.
Hahaha....I agree China Wouldn't it be nice to have one universal. I was lucky enough to be still in school when Aus changed from imperial to metric but still does my head in
Was chatting to Lucas and he reckons 0.5 rollers wear out quicker. He recommends using 0.8 and putting it through twice. I tried with my 0.7 small hand machine and it nearly jammed and also turned the output into powder despite the baccy being nearly too wet.
When you're talking about bulk tobacco it's certainly near enough for me.
And, as for wishing that we had one 'universal' system of measures - for all intents and purposes we do!
Only three countries in the world don't subscribe to the Metric System - Burma, Liberia and USA.