Take one of the side walls and mark the drill points. The holes must be again 6.5mm away from the edge and so positioned that the wall will fit against the already joined floor and rear wall. Now drill the holes as before, (remember to first indent them using the reamer!) and sink them. Smear glue along the edges of the florr and rear wall, carefully position the side wall and screw the whole thing together.
Repeat the same process with the second side wall.
When you have screwed together the floor, rear wall and both side walls, you still have to join the front ledge. Drill the holes exactly as you have been doing, and join the ledge as shown in the picture.
Now you have finished the basic structure of your terranium! However you still have to add the front glass panel and gauze ceiling, paint the walls and make the whole thing water tight.
