I used this guide to make my own enclosure. Worked out great! (Reference source Striking Serpents).
To build this cage you will need the following tools and supplies:
2 sheets of 2ft by 4ft 3/4 inch melamine*
2 sheets of 1 ft by 4ft 3/4 inch melamine*
2 sheets of 1 ft by 2 ft 3/4 inch melamine shelving*
Glass Track - Rockler.Com
2 sheets of 1/4 inch glass cut to 25 inches by 8 inches
Squeeze tube of White bathroom caulk
1 5/8 inch #6 drywall/multi purpose Screws - pre-drilling is not needed if these screws are used
Plastic screw covers(Optional)
A helper - its easier to hold and screw with an extra set of hands
*Melamine can be purchased at Lowe's or Home Depot in pre-cut sizes
Step One - Cut Top & Bottom
We designed this cage to be easy to build by making as few cuts as possible. There are better ways to join the sides of the cage but they would be more difficult. Because the sides of the cage will be screwed to the end of the top and bottom the top and bottom will need 1 1/2 inches cut off of them to allow the back to be long enough to cover the side boards. So measure 1 1/2 inches on each of the 4ft by 2ft sheets and cut them. Here is a pic that shows the line we drew on ours...
Step Two Screw On Sides
Screw the sides to the outside end of the bottom...
Step Three - Screw on Back
Screw the back to the sides and bottom...
Step Four Screw In Top
Place the top between the sides and screw it in place...
Flip it over and screw the back to the top...
Now your cage should look like this...
Step Five - Litter Dam
Cut a 2 inch by 4 ft strip from the remaining piece of 4 ft by 1ft melamine for the litter dam. Put the litter dam in place and screw it in from each end...
Flip over the cage and screw in the litter dam from the bottom...
Step Six - Vents
We prefer using a lot of ventilation because we heat our room to 80F. We put four inch vents at each end and a two inch vent in the back at each end. There is also some ventilation between the glass. This part of the building process is up to you, your snakes needs, and your room temperature. Keep in mind that the more ventilation you have the harder it will be to keep temperatures and humidity high. Choose your vent size wisely.
Push the vents in from the inside out. This way the snake can't push the vents out and there are no rough edges for them to rub on.
Step Seven - Caulk
Make sure you use bathroom caulk that resists mold and mildew. The cage must be clean for the caulk to stick well and to esure that debris does not get stuck in the caulk. Clean out all of the debris from inside the cage. We use compressed air and then wipe out the cage thoroughly. Caulk all the inside edges with the squeeze tube of bathroom caulk...
Step Eight - Glass Track
Cut 1 1/2 inches off of the glass track. Place a bead of liquid nails down the glass track and stick it in place. We have found that it stick better if you wiggle it back and forth for awhile and then clamp it. This stuff really does stick like nails!
Step Nine - Trim
Using a clothes iron carefully iron on the melamine trim. The trim will adhere better if is pressed on after heating using a dowel or round screw driver...
Now at each end you can tap on the plastic screw covers...
Step Ten - Install Glass
Push the first piece of glass into the top back h channel and drop it into the bottom back channel. Then do the same with the second piece of glass in the front channel. You can then stick the adhesive handles on the center of the glass at each end of the cage. These adhesive handles can be purchased at any glass cutting or cabinet supply shop.
These cages can be heated with radiant heat panels, flewatt heat tape, or any other type of heat mat. We stack our cages and put a 1/4 inch gap between them. If a gap is not used the heat tape may get too hot or malfunction causing a fire. We use two feet of 11 inch heat tape running from front to back at the far end of the cage."
Hope this helps some people it sure helped me.