In this tutorial I'll show you how to construct a front hinged glass door, top vent, and a water tight bottom area for substrate or false bottom.

Time - 2 to 3 hours construction 4 to 5 days until water tight

Difficulty - Moderate

Supplies:
    - Plastic fusion epoxy, 4000lb+ strength
    - Build your own screen kit and 8 extra
            corners (12 corners total)
        + Screen kit comes with spine, 4 metal
            frame pieces and 4 plastic corners
        + I used a total of 150 inches of metal
            frame for the 40gal. tank pictured
    - Small piece of screen for the top vent
        + I use the black non-metal type
    - 2-3 Hinges
    - 2-3 Cabinet magnet latches (preferred)
        + or any locking clasps for the door
    - Aquarium silicon (If you want the bottom water tight)
    - Black regular silicon (I use GE Silicon II)
    - 2, 1/4 inch pieces of glass cut perfectly for your sized tank
            - 40 gal = 17" x 6" and 16 1/4" x 22"

Tools:
    - Hacksaw
    - Caulking gun
    - Clamps

Start with a clean tank

    First, silicon in the bottom smaller piece of glass (with aquarium silicon if you're going to hold water) to hold in the substrate or false bottom. Then use the screen kit to make a false frame for the bottom of the tank just for looks. Use the hacksaw to cut the metal screen framing and don't forget to add room for the corners. Cut this rectangle so it fits perfectly inside the cage lip but about 3/16" from the top of the bottom glass piece you just siliconed into place, this will make a lip for the door to rest on.

    Then your going to build the door by using the hacksaw again to cut the screen frame just bigger than the larger piece of glass that you bought for the door. Make sure the screen frame sits nicely inside the rim of the cage but doesn't fall in and is the perfect size. Silicon the glass onto the frame with regular black silicon and let dry.

    Once dry you can epoxy on a handle for the door's front and double check the fit of the door by placing it back on the cage and making sure it sits in the rim of the cage perfectly. Then epoxy the cabinet magnets onto the door and inside the cage frame respectively. You'll have to cut notches in the plastic frame of the cage for the latches to work (see pics). Make sure the magnets line up perfectly so that they latch tight.

    Next you'll make the vent for the top by simply following the build-your-own-screen directions and making the screen fit perfectly into the remaining top portion of the cage. Use a piece of the screen frame siliconed along the bottom of this top vent to make a lip for the door as seen in the pictures. Once fit correctly and verified you can silicon it into place with regular black silicon.

    Lastly when everything looks good epoxy on the hinges to the door and your all set.

    Wait a full day to let the epoxy set before testing it out. A full week for the silicon before adding animals or water.

    Enjoy!

Options: You can also make the door completely screen instead of glass but it isn't as good for viewing.
    - You can also make the bottom glass piece and door as large or small as you want depending on your individual needs.

Tips: Don't get the door frame too snug or it will be tough to open the door
    Always triple check measurements before cutting.
    Spray paint the hinges and frames to get a professional look