We have a coffee table we made with four 2×4 planks stained and glued to a tabletop. About a year later, one of the planks had loosed so I ripped it off and I was planning to reapply the wood glue and clamp it back in place. There is a bunch of dried wood glue on the bottom of the wood and some on the tabletop as well. The glue is very hard and it's thick in some places.
Do I need to remove this dried glue before adhering it with more wood glue? It is very hard and it's thick in some places, so I'm concerned it would not lay evenly.
If it does need to be removed what is the best method to do that? Is there a solvent I should use? Or is there a tool I should use it scrape it?
The glue is Elmers but I'm not sure if it is Wood Glue or Wood Glue Max.
Photos
Best Answer
If you want to use wood glue again, I'd remove the old glue. You'll get a stronger bond if you apply glue to clean wood. A belt sander would do a nice job.
If you're ok using urethane glue or project adhesive, the only concern is whether the replaced board will sit above the others. Otherwise I'd have no problem bonding to the old glue if it appears solid.
You could also run some countersunk flat-head screws of appropriate length in from underneath to assure the security of the boards.