Step 3 - the can
DISCLAIMER: We do not advise that anybody pierces their can like this - it is potentially dangerous. We do not accept any liability for the consequences of your own actions. We are trained professionals working in controlled environments and used to working with materials like this. An alternative to using aerosol cans could be old washing up liquid bottles or similar containers.
We relieve the pressure in our used graffiti-art aerosol cans with screws. This works but is very dangerous. We wear eye protection and safety gear and only work with low-pressure cans but do not encourage anyone else to de-prressurise cans like this. (We are working on a 3D-printed can of our own that will be available soon)
Once de-pressurised, we could carry on opening up the can. Again, we used a large screw and hammer to puncture the top of the can and remove the aerosol / paint internals. This is all covered in paint, so be ready to get messy again. BE CAREFUL OF SHARP METAL EDGES left by this technique. Once the internals had been removed we used a screwdriver to bend the sharp edges in, leaving a relatively smooth / safe surround.
Next, we need to modify the vitamin tube to fit as it is too large to fit into the rim on top of the aerosol can. Cut down the length of the tube and use insulating tape to make a thinner tube. The tube is also too long to fit into the can, so you will need to cut it down - measure it against the side of the can to get a rough idea of how long to cut it [bearing in mind the bottom of the can is domed].
Now the tube should fit snugly into the aerosol can, and match up with the rim on the top. Once you have ascertained this, put the bearings back in the can and insert the tube. Now we need to force a wine cork down the tube - we used a screwdriver to push it all the way down to the bottom. We then screwed up from the base of the can into this cork, to hold the tube in place.
The aerosol can is now complete - the tube provides us with a safe place to keep the internals / electronics away from the ball bearings inside the can. We wanted to keep the bearings as they make the signature sound of a spraycan - an aesthetic we wanted to stick to.
Now, onto the internals + assembly…
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