Take me to work. Didn't hold the bar securely, ruined the first chain I used when it slipped and hit the bottom of the "U". Put two indentations in the chain bar, apply Loctite to the set screws, tighten securely and you're good to go. Does what I need, cuts a 24 inch red oak log into lumber. The design isn't bad, except for the bar mount. The design seems reasonable in terms of security.