Having seen Matt BCUK's thread on the Caldera Cone, I thought I'd have a go at designing a clone.
It actually started last night, as I was trying to figure out how to improve the vapour chamber in a Red Bull side burner. I decide that, rather than simply place the inner wall between the pressed rings on the can bases (which gives a very narrow vapour chamber), I thought I'd made an invertedconic section wall, held in place by the pressed ring at the top, but hitting the pressed dome of the bottom can.
A little bit of basic maths allowed me to derive the inner and outer radii and the conic sector angle tocreate a conic section of any size and shape I wanted.
Then I thought "hmmm... that's a Caldera Cone, isn't it..."
So, a bit of PostScript later, and we have a programmable Caldera Clone generator, written in PostScript, that allows you to set all tha parameters you need to suit your pan and burner setup:
Burner flame offset
Number of holes at bottom
Number of holes at top
Size of holes
Scale to fit A3
Split into two pages
The parameters are set by simply editing values in the file.
The idea is to print the design at full size (printing on two pages if necessary), and using the template to cut out some thin aluminium sheet (e.g. 'oven liner').
Now, if only I could find some of this mythical 'oven liner' that the Yanks seem to find at every corner shop and supermarket...
To use the file, cut & paste the following post, and save to a text file called clone.ps (or whatever name you want). Then use GhostScript/GSView to view and print the design.
Enjoy. It's only a bit of fun, after all...
The latest, fully configurable script for Clone, Flissure, Infernal and Strata options for the template, discussed in this very long thread, are now available with a user-friendly front end script generator at zenstoves:
Nb. the scripts here and at zenstoves are for personal use only, and may not be used, either directly or in modified form, for commercial purposes.