Hello TAG !
Thomas if you made that cutting board in an attic all I can say its got to be some attic!
If its the one in the utube video as well its got to be huge!.
Watching it made me wonder if the video could be posted on the LJs site as well, not sure how its done as I am not up on the technology for doing videos and posting them.
The board, well the board is very impressive as well, so a resounding well done there mate!
The Gaps.
If you are concerned about gaps in the sections, and its a concern regarding food contamination, you may wish to consider using epoxy thinned down to fill the gaps first.
This works well however adds another process in sanding it off again so as to to allow the tung oil to penetrate the timber.
Regards
Robert Brennan