Thank you for the responses.  The video shows a little different 
technique than the one I planned to use, but I'm definitely going to 
give it a try.

bh
Temple, TX

On 8/26/2014 7:35 PM, Peter H wrote:
>
> http://vimeo.com/64726512
>
> See the section beginning at 3:15.
> Best of luck.
>
> Cheers
> PeterH in Perth
>
>
> p.s. Just in case you cannot access the video:
>
> What is shown at 3:15 is a simple method of crimping
>
> which occurs when the fuel vents are created in the top section.
>
> A pocket knife is used to press evenly spaced creases around
>
> the top part of the can along the length of it, much like a stovepipe 
> joint.
>
> The knife makes a small dent at the shoulder of the can top which
>
> becomes a vent channel. The crimped lower edge of the can top
>
> can now be inserted into the bottom part of the can.
>
>