I welcome any comments or criticisms, but please try not to be too harsh.
Step 1: Equipment/Materials
PVA Glue (or similar)
Paper Towel (to clean up
330 ohm Resistor (optional)
Plastic Tub (Can substitute for glass jar)
2x aa Battery Case
Computer (for research)
Glue spreader (piece of card works fine)
I have not included photos of everything, because there really is no need to. If there is an item you are unsure about, please leave a comment, and I will upload a photo.
Step 2: Research
Step 3: Mark Out and Cut
Step 4: Stick Together
Step 5: Bulk Out
If you want to make the snake stand up, then barbeque skewers can be taped to the card.
Step 6: Special Effects
This step outlines how to connect the electronics and smoke tube. I will assume you already have a working knowledge of electronics. If not, you can either leave out this step, or learn from one of the many electronics instructables out there. This entire step can be left out if you do not want to include the smoke system and electronic lights in your snake.
Connect the positive legs of the LED lights together with electrical wire. I soldered mine, but this is not essential so long as there is a good connection.
Connect the negative legs of the LED lights together, just like the positive ones
Cover any exposed wiring with insulation tape, but leave a small area on each of the positive and negative wires.
Position the LED's on the snake, and secure with masking tape.
Attach a wire to the exposed positive section, and run it down the underside of the snake to where you will position the battery pack.
Attach the 330 ohm resistor to the end of this wire.
Attach the end of the resistor to the switch.
Attach the switch to the positive terminal battery pack.
Attach a wire to the negative terminal of the battery pack, and run it along the underside of the snake, and attach it to the negative wire from the LEDs.
Make a hole in the lid of your container or glass jar, roughly the size of your pipe.
Force the pipe in the hole, and secure with insulation tape. Blue tac can be added as a seal.
Run the pipe along the underside of the snake, and position inside the mouth. It is a good idea to reduce the size of the pipe, to create a nozzle. This simply involves forcing a pen tube into the end of the pipe, before pushing it into position.
Secure the pipe with masking tape.
Step 7: Paper Mache
Begin by tearing newspaper into small strips. One by one, generously coat the pieces in glue. Then, taughtly place the strips over the snake. Repeat this process until the entire snake is covered in a layer of paper mache. Take care not to obstruct the LED lights or the dry ice nozzle. Leave the glue to dry, then do the same again. Keep building up the layers until you have a hard outer shell on the model. This can be anywhere between 2 and 8 layers. Once thed glue on the final layer has dried, you are ready for the next step.
Step 8: Paint
This step is simply painting the snake. You will have to come up with your own pattern, but don't be too exact. My model looks nothing like the pattern on the snake I based my design on, but no one would know that when they look at it. A simple black background with a bright criss cross or lines is simple to apply, and gives a great visual effect.
There is no need to use conventional methods of applying the paint. On mine, I did not once touch a paint brush. I used cotton balls and cotton buds, to great effect. Feel free to be creative, after all - it’s your project.
More than one coat of paint will be required, but don't rush, as this will lead to smudged edges and a very disappointed creator. Give the paint plenty of time to dry to achieve a nice looking snake.
Step 9: Use
A good place to put the snake is inside a basket, with some canvas covering the batteries and dry ice tub. I put mine outside the front door to scare passers by, as I used this for Halloween, however you could put it anywhere you liked.
Step 10: Additions
I used a margarine tub for the dry ice chamber, and found it didn't have a good enough seal to work properly, and as such I recommend using a glass jar.
This instructable is only a guide, and will require some creative thinking, however feel free to leave a comment if you have any thoughts, questions, criticisms, improvements etc.
I will be entering this instructable into the MakerBot Challenge, so please don't forget to vote!