Toasted Chipboard - help needed with settings!

[caribis2]

I used Varathane triple thick spray polyurethane for the puzzles I did here:

Puzzle Process

I made three jigsaw puzzles as a birthday gift. I combined what I learned from these posts by @jbmanning5, the resident puzzle master/professional (he has many posts, I should have used more): And I generated the puzzle from @Draradech’s puzzle generator. https://cdn.rawgit.com/Draradech/35d36347312ca6d0887aa7d55f366e30/raw/3aae0d0e8257a6c2979b13812c289042a9367128/jigsaw.html First, I ordered some 0.100" inch thick chipboard. Not until I ordered it, did I read that .060-.070" chipboard …

I doubt the brand really matters.