Here is a better day time view of the steam box we built.
Don’t forget to refill the boiling water as it steams off!!
20 +/- minutess bathed in the steam seemed to be enough time when the fire is ripping.
The steam bent laths resting in their jig built from scrap wood (thanks caleb!). Immediately after taking the hot laths out of the box, Jed found it best to prebend the laths over his knee before placing them in the jig. With this method the bend was more pronounced.
This is what steam bent laths looks like when assembled as a khanas. See how the overall shape is not concave but bulges out a bit?