With only 6 holes it would go out when resting the pot directly on top. By adding more holes kept it alight even though you cant see the flames in daylight - it boiled water ok.
01 first penny stove using a uk penny 
02 penny stove working as expected however it did splutter abit 
03 an improvised stand from a coathanger 
04 cant See the flame but its boiling water at 
05 the water boiling with the addition of more holes