ZigZagZeppelin:
I have been using the heavy duty manual shredder for over a year now, and had good results. Two things to know. One, is to keep it cleaned and lubricated. Very sticky tobacco gums it up. If you try to force the tobacco when the machine is gummed up you will damage the combs on the underside. Two, moisture content of the leaves you are shredding is very important. Excessively dry leaves will result in dust and fines with no shred. Excessively wet leaves will ball up on the underside and gum up the working parts. You will have to experiment with moisture to get a feel for what is right. One type I grew last year, Ternopolskii 7, is a low nicotine cigarette tobacco that is also naturally sticky. This stuff gave me fits trying to shred it because it gummed up my machine so quickly.
Based on my previous experience, the commercial tobaccos I have bought from WLT have been just about right for moisture content. The types I have purchased shred very well straight out of the freshly delivered bag. Be sure to trim the big stems out. Trying to jam big fat stems through the shredder will also damage the combs.
I have to de-commission my shredder every once and a while and take it apart and give it a thorough cleaning. This takes time, is a bit messy, and I don't like doing it. Cleaning is another one of those bothersome chores in life. But it has to be done from time to time. I use 95% ethanol to cut the sticky stuff. (Good old fashioned grain alcohol) I'm sure there are other solvents that would do a better faster job, but I'm not sure I want anything like that on my hands or on my tobacco. Other than the flammability, alcohol is pretty safe. (So long as you are not drinking the stuff!) With properly humidified tobacco, you can make nice long shreds with very little dust and fines. If you take care of your machine, it will treat you right.
Wes H.