Thanks for the write-up. I was also considering this brush blade.

Do you have chainsaw experience? If I remember, the Beaver Blade looks like it uses sawchain to do its cutting. You said you did not hit dirt which makes me think you have worked a chainsaw before. So I was curious if you are saying that if you had used a small chainsaw to do the same work you would have expected better performance than what the Beaver Blade gave.

Can you touch it up with a saw chain file? There probably was dirt in the bark at the level you were cutting at. Have a close look at the cutter, if there is a V radiating back from the cutting edge that is wear from abrasion.

The gentleman making this post makes me question the validity of the post. If your experience is so broad at this why would you not sharpen the chain or not even know that you can, its no different than a chainsaw (except 2/3 less teeth). A chainsaw needs to be sharpened with a couple of file strokes to keep it performing well.
Your statement-I am one unhappy customer. I wonder sometimes if some companies have representatives come to these sites appearing as regular users but are just looking for an opportunity to plug their product-. This is a slip on your part and tells me that you are undermining this product, who do you work?
If I'm wrong then get a file and learn how to sharpen a chain.
I to don't like people promoting or undermining products. It's clear about the motive of this post, since I have used the same product for 2 years.

I have owned and used a 14" beaver blade with my DR Trimmer mower for 10+ years. It is great. I bought it to cut privite that got out of control. When the aw gets dull, sharpen it like any chain saw.

I would think that the reason you had trouble was the gum from the soft wood you were cutting. I would clean it with a solvent and give it a go again

My dr trimmer sat idle in my shed for years. It was worthless as a string trimmer. I talked my husband into putting the saw blade on. Best tool ever. blade is now dull, but I will clean, sharpen and buy a couple of back up blades. Cleaning out briars, thorns, saplings and making our land beautiful.

These blades work best in DR units with the larger blades . Much safer and effective . The smaller blades on handheld brush cutters dull quick and result in kick back situations . Also the chain is not premium quality , therefore loses its edge quickly . Small job usage by an experienced saw user they are adequate .

Pay no attention to the review above. A new beaver blade will cut 2-inch sweet gum trees all day long like butter. There is nothing comparable. There are alternatives that have fewer teeth that work great, but they wear out twice as fast.