But I'm headin' in the bedroom to read a little before turnin' in... might be mornin' before I read your post.
I am thinking about adding a grate to the boiler I built. Right now the air comes out holes at the bottom of the door which ends up being below the level of the fire due to ash build up (I keep the first six inches of box clear of ashes so the holes aren't blocked). This leads to the wood at the front burning down faster than at the back so before each load I have to take my fire rake and level it out. I don't know if this is similar to what AIM is talking about when he said across or not. My set up is usable but I think it could be better.
Maybe a slower fan might not burn the hole???
If the grate gets plugged with small "clinkers" (most often form burning elm)
A coal shaker grate?? They work real well.The stove we had in the shop growing up had a grate in it that pivoted in the middle a slight amount so you could put a special wrench on a lug and jiggle it until all the ash fell into the drawer. That would be ideal but much harder to engineer.
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