I really miss that lipstick.
Anyway, when transitioning into the kitchen from the dining room, we needed to run the flooring in the opposite direction. That becomes an issue when it's a tongue and groove floor and you are now missing the tongue.
No worries…you just need to make one!
We found a piece of thin ply in my scrap pile that fit the groove snuggly and ripped it down to the correct size, which was about a 1/2" wide.
(just for the record, this was a piece of beat up scrap wood:))
We then glued the ripped down strip into the groove, ready to accept the wood running in the new direction.
Now the wood going in the new direction has someplace to attach…into the new tongue.
First piece in place.
and so on and so forth...
Our professional hardwood floor gluer.