Tell us about yourself!
The key to getting these to work well is very, very simple.The inner part simply needs lots of small holes in the base made with a punch or sharp drill. Then around the edge very close to the top you can make much large holes with a 10mm drill bit or even snip them.The idea is that the outer can allows air to feed in from the bottom but also some goes up the sides to enter at the top holes. This is where the air completes the combustion and creates the small jets of flame.I found it is very tolerant of a varietyu of designs so just give it a go!!!