We bought 101 acres of woods, so we have and will have many stumps to address. In this video, I'm using the Woodland Mills WG24 Stump Grinder to grind a pair of stumps in the middle of our perimeter trail.
The stump grinder has a 24" diameter grinding wheel containing 34 replaceable tungsten carbide teeth. Lower the 3pt to remove an inch or so of material when driving forward. On each pass, go deeper until you are a full 6" below the surface if necessary. If the bite is too much, you can notice the back of the grinder start to lean and/or the audible change of the tracker under too much load.
When looking at the back of the grinder you will notice that it rotates in a clockwise direction. When cutting, it's important to do the majority of the cutting in the 6 o'clock to 9 o'clock quadrant, with minimal cutting in the 3 o'clock to 6 o'clock quadrant. Because the cutting teeth are traveling down in the 3-6 quadrant, a lot of the cutting energy will be wasted in the downward compression of the wood fibers rather than slicing them away. Too much downward cutting will cause the grinder to bounce around.
For reference, I'm powering it with a Bad Boy 4035h tractor with a SpeeCo quick hitch attached. The WG24 is indeed quick hitch compatible.
Special thanks to @woodlandmills
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Email: BPo3Homestead@gmail.com