fishfactor
Gold Member
Can a mulcher head flush cut the treestumps without dulling the cutting knives/hammers?
Both heads will get flush with different methods.
A carbide hammer head can get flush easily and even engage the dirt. It will decrease the life of the hammers, but that's what they are meant to do. We typically break them on rocks or hidden debris before they wear out. Not as much learning curve as a knife head, but you are more limited in diameter. As the hammers get several hundred hours on them hardwoods will start to leave little sprigs sticking up.
Knives can get flush but takes more practice to keep them out of the dirt. Your skids on the side of the head help if they are the right height. Sharp knives will leave a stump that looks almost like it was cut with a chainsaw. It's easier in larger material because you have the mulch that kinda creates a barrier between the knives and the dirt. My first set of knives on the GT25 lasted about 40 hours. Now I can get about 120 out of them. It just takes practice.
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