After Action Report:
None of the prototypes are photo-worthy, but all worked well.
We were using Pepsi cans (yes, ick) which are extremely thin-walled but rather thick-bottomed. Poking holes with the tacks was difficult. Maybe that guy upthread is right, this is a job for Dremel.
But the holes need to be tiny, literally the size of a tack pinprick. Some of our jets were way too big (we’d resorted to anchor-screws as our tacks were bending and breaking.) The larger jetholes gave us boiling water in *3* minutes, but an ounce of 91% per can only lasted twenty minutes with those prototypes, and the goal is 40 minutes burn time with one ounce.
Next run will have thicker-walled cans - Heineken’s or Fosters’, a Dremel to weaken the drill spot so the tack can
punch in more easily, and maybe some cinnamon oil for esthetics. Or vanilla bean?
A pair of needlenose pliers is mandatory for making the creases in the base so that it snugs up into the top.
Lots of fun!
What NOT to do ping.
I fudged up with the 40 min burn time.
I based that on a 20 min burn time and had expected a doubling of fuel would double the burn time.
The best I have gotten so far is 23 min.
Tacks are a bear to use LoL! I used a micro tiny drill bit in a pin vise.
I just experimented with cutting with tin snips instead of the crimps.
It dont work so swell. sharp edges cause tears.
Keep at it! I am glad yall had fun and engaged the old brainbox.
Were penny can smores made?
Guess I’m going to have to find some micro drill bits somewhere. Harbor Freight maybe? What size?
Guess I’m going to have to find some micro drill bits somewhere. Harbor Freight maybe? What size?