Dear Darren
>I could more easily lower the grate which would provide a bigger gap between grate and bridge and allow for wood to fall through more easily, That's is fine. It might have to go up a lot. Did you try using round wood placed across the grate? (not cubes) >.although I guess if this will also effect the heat output? Don't see why. The heating power will be related to the rate of burn, that's all. >Also I guess a steeper grate angle will help. It might. There are boilers with quite steep grates. I have seen one that was L shaped. The fuel was dropped 'in front of the primary air supply' held away from the holes by the sort of vertical part of the grate, then a more horizontal part of the grate sloped down towards the combustion chamber. The point is to have a decent fire burning at the bottom of the hopper without getting the fire into the hopper itself. Regards Crispin
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