Quoted from Markharris2000:If you had a joint biscuit cutter, I would consider putting two of those in to lock the current position of the wood on both sides of the cracks. I would use a polyUrethra glue like gorilla, and then fill the gap that remains after the biscuit is in place, dried and then cleaned up.
If you try to just fill and paint, the cabinet will reveal the cracks as the humidity changes. Not a big deal, but worth the use of biscuits if you really want to make it vanish....
PolyUrethra? I’d have a doctor check that out!
Polyurethane is probably a better choice.
Jokes aside, on my own cabinet I used wood glue and I just had the front panel break free after about 6 months so I’m going to use nails to finish it completely
