</font><font color="blue" class="small">( I had one of these kits about fifteen years ago in my shop and used standard steel drums (with sealed top/bottom, two bungs in top) )</font>
Glenn,
How did you like it ? Did you find the bungs useful for additional draft or did you just leave them closed ?
</font><font color="blue" class="small">( looking over the instructions at the link you provided they seem to be referring to this type drum. )</font>
Yes they do - I think probably because of liability reasons - if the band clamp securing the lid were to break while there was a fire in the stove it could be real ugly, I'd imagine.
Here's the reason I want open head drums: I intend to weld the 30 gallon to the inside center of the lid of the 55 and have the 30 gallon drum become the firebox so to speak, and the 55 be the outer wall of the stove. I plan to partially fill the space between the two drums with sand to act as a sort of 'firebrick' or thermal retainer. An open head drum just makes it easier to do. Once I get the 30 welded onto the 55's lid and installed in the 55, I'll probably weld the lid for the 55 onto the 55 itself as well.