I don't remember seeing any commentary on the Carbide Tipped Planer Knife Set for the DeWalt DW735 as sold by Holbren.
http://www.holbren.com/planer-knife-...de-tipped.html
Some time back (couple of years) I purchased a used DeWalt DW735 Planer. I fixed it up and purchased a few extra blades. They were OK, did nice cuts, but I needed to replace them more often than I expected. This from hobby use with what I considered mostly light use. So, I decided to try the Carbide Tipped Planer Knife set from Holbren.
The knives come with no instructions, I mean, why would you need instructions? The normal blades are set in place, and then a metal piece is set on top of the blade to hold it in place. A screw is then run through this to hold both items in place. I installed the Holbren blades exactly as I installed the original sets and ran a piece of wood through. The problem is that the new blades are thicker, so the screws left gouges in the wood (and it was not good for the screws either).
Sent an email off to Holbren, which they answered immediately. Seems that with the thicker blade, the metal blade retainer is not required. Remove the metal blade retainer, rescrew and off I went. This produced that nice surface that I am used to.
I am still on my first blade, and it seems to be lasting longer than the other blades. In other words, so far I have been very pleased with them.
So, how much lumber have I run through my planer with the new blades? Sadly, I don't really know. I am guessing that I have emptied my sawdust bag four or five times. I have run mostly cherry, hard maple, and ash through the planer, but I have done some other woods as well (such as white oak).
I opted for the carbide tipped blades because I was concerned about installing a Shelix head on a second hand DW735.