****** - Verified Buyer
4.5
April 2019I am now starting my 3rd season with this cutter head. I've attached two pictures, one with the teeth worn down and one with the replacement teeth installed. Before I purchased the head, I read some reviews complaining about how quickly the teeth dulled, bent, and/or wore down. Well, they do wear, but this is the first replacement set I've installed. Two full seasons of hard cutting. We have rock, chain link, brick, stumps, rocks that like to play hide and seek and other surprising things that I run across. The head was still effective with half of the teeth worn away. It is much more effective with the new teeth. Two years plus and I'm very happy with this unit.I have used this now for about 20+ hours of actual weed eating. It is mounted on a Sthil FS45. I don't think that I would want to mount it on anything smaller, but it is quite effective on my unit. The initial load of string that came with the unit did not last as long as I expected and I was forced to use some .105mm string that I had on hand. Although I had to replace the smaller string frequently, it was not as often as I expected and performed better than string alone. During this initial usage, I was working my way through 5' Johnson grass, woody weeds, thistle, honey suckle, small saplings, large polk plants, and other weeds.Having read the reviews about the teeth not holding up, I was cautious about banging it into things such as rocks, trees, and chain link fence. Working methodically, read slowly, actually allowed the head to work more effectively and seemed to be easier on me. So far, I haven't experienced bent or broken teeth on the teeth ring. As other reviews state, it does require you to take a little more time ( a second or two) to let it spin up to speed and will bog down a marginal machine if you push it too quickly.After my initial use of the .105mm line, I have acquired a supply of the .155mm line and it is lasting as long as I would expect and does a good job. The heavier line is best used in large weed situation and the smaller line seems to work better when trimming grass and edging along walks.A word of caution, the WeedShark will throw cuttings and chunks of weeds more than just a string head. My preferred safety equipment is a screen face shield over safety glasses, long sleeved shirt, heavy jeans. I also am more aware to keep anyone else 15' to 20' away from where I'm working.All in all, I'm very pleased with the performance of the WeedShark. It does what it says it will do if you use it properly.