Alright its not exactly a tutorial because my phone camera was playing up so its missing some stages...
First of all, we got two empty gas bottles, took the valve off, filled them with water just to make sure they were actually empty.
Cut the tops off both of them making the cut out circle on one bigger than on the other so the bigger cut off top would make a fitted door for the other.
Then we cut a hole in the bottle for the smoke to escape from and put a grate in as well (multifuel) and thats about where the first pics start.
Theres a section of steel girder welded onto the bottom (what was the side) and thats where the ashes fall into a little metal ashtray.
Note, theres still a small hole to cover at what was the bottom of the bottle at this point but will now be tha back, otherwise the smoke will get out at the back of the stove.
You can't really see it in this picture but theres a big section of what was the side been taken out under the grate to allow ash to fall through into the ashtray...
The section of girder that will be the combined top and hotplate after I had attacked it with a gas axe showing the hole that the chimney coller will fit into...
And stove with ashtray and grate removed to show large cutout in gas bottle to allow ash to fall though...
Getting ready to fit it and in the second pic the door is tackwelded into position just to hold it..
Finished stove showing chimney collar, door in place and getting ready to fit it..