

Cut out the parts from the file.
It is designed with 3mm basswood. When you cut it out with thicker wood then you must ajust the slots to you own thicker wood.
The slots have a kerf adjust of 0.15, so that they fit snuck.
Assemble the parts. You start with the base plate. Place back first and so on.
You can use glue, but the design is made that it is snuckfit.