This disclosure describes a cutting tool for cutting horizontal stabilizer channels along sidewalls of trenches. The cutting tool includes a shank with a depth stop, a bearing guide, and a cutting head. The cutting head is configured to make a horizontal cut into the sidewalls of the trench at a specified depth. The depth can be adjusted to accommodate different engineering requirements. The cutting tool is driven by a vertical shaft from an electric or gasoline powered walk behind router. The cutting tool can be utilized to provide horizontal stabilizer channels in trenches that can reduce repair costs due to sealant failures and mitigate safety hazards that can arise from changes in sealant elevation. Additionally, this device can be used with a “straight” router bit to resurface existing sidewalls (cleaning).
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Korman, John; Cox, D. Clay; and Walsh, David, "Cutting tool for trench stabilization channels", Technical Disclosure Commons, (April 27, 2018)