That is a very cool machine. Sometimes referred to in some of the woodworking forums as the Alien Head planer - stand over it, look down at the head and think about that movie with Sigourney Weaver. If the knives are just dull, you can probably get them sharpened. If they're nicked, in the short term you can try an old trick and offset one of the knives a little bit. It's a 6 inch by 2 inch thickness planer, so knives for a Sears 6 inch (actually 6 1/8) jointer planer might fit and should be easy to find. Sears may even still stock them. In fact, I think I have a spare set of six inch jointer knives here somewhere. If you get a knife out, measure it up - length, width, thickness, and send me a pm. If the knives I have will fit, they're yours. Also, I see that American National Knife's website,
www.americannationalknife.com shows them stocking Craftsman planer knives in 6 1/8 x 5/8 x 1/8 and 6 1/8 x5/8 x 3/32. I spent quite a bit of time trying to rationalize picking up one of these that was available near here, but for as little as I would use it (I already have a jointer) I just don't have the space for one.
