This machine is a jointer not a planter, the model is the Porter Cable JT160 6" Shopmaster. As I said, the jointer has done a pretty good job for me I think, I say I think because I had never used a jointer before I acquired this one. I have been hesitate to change out the knives and am not going to tackle it as long as my workpieces keep coming out as well as they have been, but I do know that the time to change them is going to come along and I want to be prepared to do so when that happens.
Charles has given me a pretty good description of what I need to do and his help is very much appreciated. If I have a look around, I should find the Owner's Manual, can't image thronwing it away.
I probably will contact Rockler and see what they have in the way of tools that I can use for the job.
Thanks for your response to my question.
Colorado City, TX