For a full size XXL, you'll need to make this 4 times.

There are 5 mounting grooves allowing you to secure the spoil board to the bed of your machine.

There are 3 carving groups within the design file...

• first is for carving the insert holes. I use a down-cut bit for the first to carves, with an up-cut when going through the board.
  
• second is for carving the top of the spoil board and carve out the 5 mounting grooves.
  
• third only needs to be done to the front right quadrant and cuts out a spot for the bit-setter to sit in the correct place.
  
  
  
  Later I'll add an additional file for lasering a grid onto the top of your spoil board after surfacing.