Use caution when working with fire and flammables!
I recently placed a meat thermometer next to the acrylic cylinder. It's temperature was starting to exceed 190 Degrees F. The acrylic that I was using was regulated for up to 170 I believe. With that being said I would not run this to long unless you have a cylinder material that is more resilient to heat (glass).
In the clip below there are two setups. I will have more details about there differences at the end.
This is an adaptation as a result of a demonstration that I put on for my professor and fellow students in class during Bellarmine University's MAT program. I had seen many fire tornadoes where you spin a lazy suzanne (or that alike) with mesh around the outside. I didn't like the idea of spinning the flammable liquid (alcohol). A quest for a safer method then ensued.
Through much trial and error, lessons learned, and a lot of curiosity; I have built something pretty cool.
I hope you enjoy this build!
Step 1: The Parts
Acrylic tube $15
Push button: $0.66
Manufacturer Part Number (digikey) GPTS203211B
Computer Fan $2.99:
Computer Fan Grill Screws: Not sure, these may come with the grill or the fan. My fan was left over from an old tower computer.
Fan grill: $1.66/grill (pack of three)
Metal Can: $0.77
Metal screen home depot $8.65:
9 volt conector/9 volt sleeve: $2.91
DigiKey manufacture number 1290
Cabinet Bumpers: $2.97
Home Depot- Shepards Self-Adhesive Vinyl
Step 2: Make a Stand
I choose to bend mine slightly in to give more of a pinch to the can.
Step 3: Support for Cylinder
As you can see, I left extra to use as hooks when attaching to the grill and to itself. When I make my next one I plan on having alternating squares at the bottom to attach to the grill.
Step 4: Attach Fan
Step 5: Fan Stand
Step 6: Wire It Up.
Step 7: Pour, Light, Flip
Step 8: Creators Notes
After use, the acrylic cylinder gets hot, real hot. I don't know if there is a work around for this or if it's just the nature of having a heat source inside a container. Some thoughts are decreasing the width of the internal container that is holding the alcohol. In doing so, I am guessing that the further the flam is from the walls the better. However, the ratio of width of outer cylinder to inner can my create some issues.
As I continue to make new ones I will update this to let you all know the best design and practices that I come across.