I have a Lienbach Line post hole digger that I bought with my tractor. It was OK, but the digging edge would wear out quickly. After a few years of messing around with that one, I discovered the Speeco auger bits at Atwoods. It is a direct replacement that bolts up exactly the same. It was a huge improvement over what I had before and I liked it a lot until I had to do a big fence job with 150 posts. In regular soil, it digs just fine, but in hard packed clay and clay/sand mix, it's not so good. The replacement cutting edges wear out on anything abrasive, so they need to be changed fairly often. Atwoods has them in stock, and after going through several sets before giving up on it. I just couldn't get it to penetrate a super hard layer of grey clay on my land that was under the red dirt. It would just spin on top of it and wear off the cutting edges.
Tractor Supply has an auger from Countryline that has a much more aggressive corkscrew tip and special cutting teeth that I think are made of something super hard. This is the most impressive auger that I've come across. It goes through the red dirt like it's nothing, and when it hits the grey stuff, it pulls the tractor down into the ground with it. I have to keep lifting the auger before it gets in too deep. Several times I had to go get my backhoe and use it to pull the auger out of the ground because it buried itself faster then I could react to how quickly it was digging.
Avoid the Speeco and go find a Countryline auger at Tractor Supply. The prices are close enough to not matter, the difference in performance is night and day!!!!
Eddie
