Just like the last step, attach two parallel plasticard pipes. This time, place them vertically just next to the doorway you glued down before. Attach another handle from the Dwarf Bolt Thrower. One last bit of plumbing: add a pipe over the doorways to cover the overhang cut.

Now for the engineering panel. Cut out a 5 cm x 4 cm section from a 1-cm grid sheet of plasticard to serve as the backdrop. For the metal bitz, just attach them in a pattern that looks mechanical – we grabbed bitz from the Dwarf Flame Cannon and Bolt Thrower (minus any Dwarf imagery that we filed off). To fill in the empty area at the bottom of the panel, cut out a small square of V-grooved plasticard to look like a ventilation grate. Once all this dries, glue the entire engineering panel to the wall.

Make the door controls from thin plasticard and place them in the slots in the doorways you glued down before. Cut out two thin plasticard triangles, glue them to a square of thin plasticard, and glue the square to the door from the backside so the triangles fit in the slot.

Once you're satisfied with the lighting grid fit, glue it down to the floor with super glue. If your gutter drain has a slight bend to it, you can use the grid to correct for this by applying weight to it while it dries (you'll need at least 18 lbs.). You'll need a lot of glue to get the grid to force the vinyl flat.

There you have it, a Space Hulk compartment ready for paint. Don't glue down the crochet grid just yet – you'll have a much easier time painting without it in place. Just make sure it lines up right for now.