Push out the parts from the back side of the MDF sheet
Use normal PVA woodglue for glueing the part together, applyed with a small brush
Start with one cross bar in the middle of two boards.
Let it briefly dry. Then glue the other two cross bars.
Turn the pallet and stick two boards in the middle
Then stick the two outer planks on one side.
Turn the pallet and stick the last two boards
The Pallet is now ready to use in your Games !
Have Fun with it