Not worth the money. The cutting blades won't stay in place even with shims. I ended up making a long shim to fill the entire groove, making the blade unadjustable but keeping it from moving. Wouldn't buy again but will keep modifying until I get it working properly. Not a good design. The quality is fair. It would be better to make a jig for installation on a drill press. It's dangerous to hold a drill with branches in the wood.
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