For really stuck connections, a few whacks with a hammer on the joint, with tension applied to the wrenches will give enough vibration to free things up.
Subscribe to Fine Homebuilding magazine now and save up to 52%
© 2017 The Taunton Press, Inc. All rights reserved.
Become a member and get instant access to thousands of videos, how-tos, tool reviews, and design features.
Start your subscription today and save up to 52%