Against the throwbacks, yes, but it's a royal pain in the ass to feed the limbs/wood throw them.
You can bet that every little stub/twig will catch a ring of the chains, coming in or out (to maneuver to excape the first stop).
It has to be heavy to have some effect, so you fight it constantly. The rubber curtain push down the limbs on the in-feed bottom and the secondary limbs catch the front edge and stall the whole limb for example. Or one catches the back of the curtain when you want to pull it out.
You can't "chuck" the limb with that, as you have to muscle it to pass the curtain. Then, the rotor catches it and strips it from your firm hands, with a bit of skin I guess. The curtain guard is usable with an infeed roller, but it's still a pain to work with. I have one on my small chipper, transparent bands side by side like an industrial supple door. Guess what ? Most of the time it's folded over the infeed tray. Now I can work !
I'm not saying cnds are the best chipper by any means, i would love a large hydraulic one with a winch, but they do work and cost very little for the work they do. I literally paid more for my 80 cc saw than i did for my chipper
