Join Date: Jul 2008
Location: Dickinson, Tx. / Somerville, TX
I have repaired literally well over a thousand chairs. Most of them were older chairs likely 80 years or more. Most of them with mortise and tenon joints, were just glue failures due to time. And most of them were hide glue. Easy repair. About the only time i would ever see a broken tenon is when someone ran a screw through it to fix it when it became loose.
A good amount of chair failures overall were due broken dowels. Probably built during the Great Depression.
Repairs today on modern furniture are more challenging. Usually the modern adhesives just dont fail - Too strong to fail. So the wood has to give. Same for modern repairs - once done properly, that's it for life, which is not always a good thing.
Most modern joints that fail are due to starved glue joints. The manufacturers use too little glue at times. My guess is that it saves them from minor cleaning up of the adhesive.
Retired woodworker, amongst other things, Sold full time cruising boat and now full time cruising in RV. Currently in Somerville, Tx
Last edited by Tony B; 01-13-2020 at 04:18 PM.