just had a thought on this
A thickness planer is "auto feed" unlike a jointer where you have to control the feed rate and possibly have your hands where they shouldn't be...? That's a safety feature that I hadn't thought of. The controlled rate of feed may also have some advantages in tear out?
Small wedges in the gaps below will prevent any feed roller pressure from shifting the work.
The answer to your question will only be as detailed and specific as the question is detailed and specific. Good questions also include a sketch or a photo that illustrates your issue. (:< D)
Last edited by woodnthings; 07-22-2015 at 11:06 PM.