[gkingbing]

I purchased a piece of teflon from McMaster which was around 4 inches wide and width of the blade. I centered it on the bolt holes and used the old worn blade to secure it with the bolts. This extends the blade down a couple inches and when it gets worn, just turn it over to get the new edge in contact with the ground. Works great. I had to drill out all of the blade bolts that were rusty. Replaced with Stainless.